PLOS ONE
RESEARCH ARTICLE
Beyond megadrought and collapse in the
Northern Levant: The chronology of Tell
Tayinat and two historical inflection episodes,
around 4.2ka BP, and following 3.2ka BP
Sturt W. Manning ID1*, Brita Lorentzen1, Lynn Welton2,3, Stephen Batiuk2, Timothy
P. Harrison2
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1 Cornell Tree-Ring Laboratory, Department of Classics, Cornell University, Ithaca, NY, United States of
America, 2 Department of Near and Middle Eastern Civilizations, University of Toronto, Toronto, ON,
Canada, 3 Department of Archaeology, Durham University, Dawson Building, Durham, United Kingdom
*
[email protected]
Abstract
OPEN ACCESS
Citation: Manning SW, Lorentzen B, Welton L,
Batiuk S, Harrison TP (2020) Beyond megadrought
and collapse in the Northern Levant: The
chronology of Tell Tayinat and two historical
inflection episodes, around 4.2ka BP, and following
3.2ka BP. PLoS ONE 15(10): e0240799. https://doi.
org/10.1371/journal.pone.0240799
Editor: Michael D. Petraglia, Max Planck Institute
for the Science of Human History, GERMANY
Received: February 3, 2020
Accepted: October 3, 2020
Published: October 29, 2020
Copyright: © 2020 Manning et al. This is an open
access article distributed under the terms of the
Creative Commons Attribution License, which
permits unrestricted use, distribution, and
reproduction in any medium, provided the original
author and source are credited.
Data Availability Statement: All relevant data are
within the manuscript and its Supporting
Information files.
Funding: TH, SWM, Award 895-2011-1026, Social
Sciences and Humanities Research Council,
Canada, https://www.sshrc-crsh.gc.ca/homeaccueil-eng.aspx. TH, University of Toronto,
Canada, https://www.utoronto.ca/ SWM, Award
BCS 1219315, National Science Foundation, USA,
https://www.nsf.gov/ SWM, College of Arts &
There has been considerable focus on the main, expansionary, and inter-regionally linked
or ‘globalising’ periods in Old World pre- and proto-history, with a focus on identifying, analyzing and dating collapse at the close of these pivotal periods. The end of the Early Bronze
Age in the late third millennium BCE and a subsequent ‘intermediate’ or transitional period
before the Middle Bronze Age (~2200–1900 BCE), and the end of the Late Bronze Age in
the late second millennium BCE and the ensuing period of transformation during the Early
Iron Age (~1200–900 BCE), are key examples. Among other issues, climate change is regularly invoked as a cause or factor in both cases. Recent considerations of “collapse” have
emphasized the unpredictability and variability of responses during such periods of reorganization and transformation. Yet, a gap in scholarly attention remains in documenting the
responses observed at important sites during these ‘transformative’ periods in the Old
World region. Tell Tayinat in southeastern Turkey, as a major archaeological site occupied
during these two major ‘in between’ periods of transformation, offers a unique case for comparing and contrasting differing responses to change. To enable scholarly assessment of
associations between the local trajectory of the site and broader regional narratives, an
essential preliminary need is a secure, resolved timeframe for the site. Here we report a
large set of radiocarbon data and incorporate the stratigraphic sequence using Bayesian
chronological modelling to create a refined timeframe for Tell Tayinat and a secure basis for
analysis of the site with respect to its broader regional context and climate history.
Introduction
Much recent scholarship has focused on identifying apparent periodic episodes of substantial
and longer-lasting drought–so-called megadroughts–which arguably appear to correlate, at
least approximately in temporal terms, with episodes of major collapse, change, or
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The chronology of Tell Tayinat and two historical inflection episodes, around 4.2ka BP, and following 3.2ka BP
Sciences, Cornell University, USA, https://as.
cornell.edu/ BL, Use of the CCMR facilities,
supported by NSF award DMR-1719875, for wood
charcoal analysis, https://www.ccmr.cornell.edu/
The funders had no role in study design, data
collection and analysis, decision to publish, or
preparation of the manuscript.
reorientation in human civilization in various regions of the world [1–3]. Whether mere
approximate contemporaneity is indicative of explanation is another question, and recent discussions of social responses to climatic change have highlighted the unpredictability and variability of possible outcomes, precluding a simplistic association between environmental
change and societal collapse [4–11]. Nonetheless, chronological resolution is an essential component of consideration of any possible relationships between environmental change and
social response [12], and the absence of an appropriate close temporal association undermines
many purported causal connections (e.g. [9, 13–15]). The potential importance of such historically relevant climate forcing episodes, both in explaining history, but also as laboratory of current and future relevance, should not be overlooked–and this general topic has been the
subject of much recent research, as in other regions, in the Mediterranean-Near East (e.g. [1–
3, 16–23]), but also debate (e.g. [4–11, 24]). In several instances, the exact associations and
causal connections between observed proxy evidence for climate change and human history
have been demonstrated to be both complex and multi-faceted, and often not as clear in temporal or causal terms as sometimes stated by proponents of one or other specific viewpoint
(e.g. [9, 14, 15]).
Two multi-century climate change episodes with special relevance to the Levant/East Mediterranean region are regularly cited and stated as occurring from (i) ca. 4200 BP/2200 BCE
and (ii) 3200 BP/1200 BCE (BP here from 2000 CE) (e.g. [16–23, 25, 26]). In each instance,
there is purportedly a multi-century episode of collapse, then general hiatus and transformation before a subsequent return to ‘high’ civilization—the Middle Bronze Age (the Middle
Kingdom in Egypt, the Old Babylonian period in Mesopotamia) from around 2000/1900 BCE
for the first, and the Iron Age ‘renaissance’ from the 9-8th centuries BCE for the second (the
latter perhaps linked to a major solar irradiance minimum and climate shift [3, 27, 28, ref.
29 pp. 112–115]).
The 2200 BCE episode in the later Early Bronze Age (hereafter EB) is well-dated, both in
terms of some wider proxies indicating a shift to cooler and more arid conditions, and in
terms of the demise and abandonment of the formerly primate site of Tell Leilan in northern
Syria just before 2200 BCE [25, 30, 31]. However, the impact of this climate event is more difficult to reconstruct in the Levant and tightly resolved higher frequency records are sparse.
Recent syntheses of radiocarbon (14C) evidence have decoupled the chronology of this event
from the long-recognized decline in settlement during the EB IV in the southern Levant,
which is now recognized to have begun several centuries earlier, ca. 2500 BCE [32, 33]. It is
also increasingly evident that sites in the northern Levantine region, which were in less fragile
dry-farming loci with significant access to reliable water resources in the form of karstic aquifers, were variably affected and not all collapsed [25, 34, 35]. Weiss indeed argues that the
Euphrates and especially Orontes river valleys, and the area of ‘karstic’ springs, formed refugia
during the 2200 BCE episode with growth supplemented by habitat-tracking out of other less
resilient regions of northern Mesopotamia/Syria [25, 35]. He points to the take-off of Tell Tayinat as an example of this [35]. While the variable ecological context is undoubtedly relevant,
other factors also appear to be in play, and not just survival in the face of climate crisis, including the re-orientation and transformation of interregional trade and local economies, and of
the relevant trade routes. In particular, these processes saw Anatolia and the East Mediterranean (and so maritime connectivities, versus, or in addition to, land routes) become more
important foci for the Levant in the later/late 3rd millennium BCE [36, 37]. In fact, contrary to
the pattern observed in areas of northern Mesopotamia, the northern Levant witnesses a persistent tradition of urbanism continuing through and following the period at 2200 BCE [34,
38, 39]. As such, this region offers a key venue for observing alternative trajectories and
responses to the 4.2k climate episode.
Competing interests: The authors have declared
that no competing interests exist.
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The chronology of Tell Tayinat and two historical inflection episodes, around 4.2ka BP, and following 3.2ka BP
The 1200 BCE episode, around the close of the Late Bronze Age, involves a long-recognized
widespread set of site abandonments, destructions and changes across the East Mediterranean
and Levantine region, the collapse of the previous ‘palatial’ economies and inter-linked trading
systems and an ensuing ‘dark age’ [11, 15, 24, 40–42]. Associated proxy climate evidence indicates another shift around this period to cooler and more arid conditions [20–23, 26, 43]. The
widespread collapse of the internationalized political economies of the Late Bronze Age is real,
and many sites do experience destruction, decline, or abandonment. But the collapse of the
region is not total. It is increasingly clear that this episode is as much a reorientation and shift
to differing social and economic models as simple collapse [11, 36], a reorganization that represents a key formative period that shapes the later developments of the Iron Age. The climate
proxy data, while relatively consistent in indicating cooler, more arid conditions, are as yet
poorly constrained in temporal terms in many cases, and exact associations with cultural and
political developments therefore remain problematic [15].
In each of these cases there remains much to be investigated and learnt in order to be able
to write a detailed history successfully and convincingly linking archaeology-history and climate. However, even more pressing is the question: what happened around and particularly
after these apparent episodes of collapse/change, during the periods of ensuing transformation
prior to the generally accepted return of ‘high’ civilization? Despite terms like megadrought
and collapse, it is of course widely understood that archaeological and historical evidence continues through these episodes, at least in several areas. We consider here the northern Levantine Early Bronze Age IV as conventionally ca. 2500–2000 BCE (EB IVA ca. 2500–2300; EB
IVB ca. 2300–2000 BCE) and the early Iron Age as the period during and after the 12th century
BCE in the northern Levant (ca. 1200–900 BCE, Iron Age I). On the principle that both
humans and nature abhor a vacuum, we may also assume a corollary if there is a climate association with the changes occurring ca. 2200 BCE and 1200 BCE (or even if there is simply a
key structural change in social and economic systems). Thus, if such climate (or other) changes
negatively affect one existing set of sites and their environmental and locational contexts, it is
also likely that other loci may find an opportunity to fill this void and to offer ‘alternative’ trajectories and histories. These cases might involve societies centered on a different, more resilient, economic base–like pastoralism in the Levant [4, 44], societies constructed on differing
socio-political scales (e.g. smaller units), based in less affected geographic contexts, or with
access to alternative trade networks [36, 41]. In other words, we open perspective towards both
resilience and alternatives to simple collapse, and more nuanced approaches that incorporate a
heterogeneity of response and opportunity at local level in the face of regional-global climate
processes.
The large and important site of Tell Tayinat in southeast Turkey offers one such alternative
history [45–51]. In this paper, we use radiocarbon dates and analysis of these to investigate
and define the chronology of the site of Tell Tayinat, and demonstrate that its substantive history of occupation(s) includes the periods of response to the ‘megadrought’ eras associated
with both the 2200 BCE and 1200 BCE episodes. The site is largely not occupied during the
‘high-civilization’ periods of the Middle and Late Bronze Age. Instead, the local regional occupation in these periods is at Tell Atchana (ancient Alalakh), and the switch to Atchana from
Tayinat at the end of the Early Bronze Age, followed by a return to Tayinat at the end of the
Late Bronze Age, forms a local version of the wider ‘alternative’ paradigm of interest [45–51].
Tell Tayinat thus represents an alternative history and trajectory to the ‘palatial’ mainstream of
the Levantine region, and a prime case study illustrating how change—whether forced by economics, climate, geography or other factors—is rarely universal. Instead, negative or positive
factors affecting one set of circumstances may well have differing and even opposite effects
elsewhere. The context and societal formations at Tell Tayinat—and the contrast, locally, with
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The chronology of Tell Tayinat and two historical inflection episodes, around 4.2ka BP, and following 3.2ka BP
Tell Atchana, and more widely with the major Middle–Late Bronze Age primate sites across
the east Mediterranean and Levant—offer us one rich window into a resilient and successful
response, and alternative to collapse, in the face of regional megadrought in the Old World.
Tell Tayinat
Tell Tayinat, located in the Amuq Plain of southeastern Turkey and centrally positioned in the
northern Levantine region, comprises a large, low-lying mound within the flood plain of the
Orontes River. Tayinat sits on the northern bend of the Orontes, downstream of its entrance
into the Amuq Plain, at the point where it turns westward toward Antakya (ancient Antioch)
and the Mediterranean Sea (Fig 1). The site has long been a focus of excavation and study,
starting with large-scale excavations conducted by the Oriental Institute of the University of
Chicago between 1935 and 1938 [52, 53]. More recently, it has been the focus of work by the
Tayinat Archaeological Project (TAP) based at the University of Toronto, which began with
pedestrian and geomagnetic survey between 1999–2002 [54], further geomagnetic survey in
2003 (http://sites.utoronto.ca/tap/assets/2003geomagneticsurvey_en.pdf), followed by excavations and study from 2004 onwards [45–51, 55, 56]. The earlier excavations demonstrated that
the site was occupied during significant portions of the 3rd millennium BCE, from at least the
EB III [52]. To date, the new excavations at the site have produced materials and contexts dating from the later part of the Early Bronze Age (EB IVA-B, late 3rd millennium BCE) and spanning the Iron Age, with significant attention paid to the monumental structures of the Iron II
and Iron III levels [53, 57, 58].
Historically, the site is also well-attested. The Early Bronze Age city is perhaps the location
referred to as Alalahu in records preserved on clay tablets from the late 3rd millennium BCE
˘
archive found at the site of Ebla in Syria [49, 50, 59]. For the Iron Age, interpretation of inscriptional evidence has led to suggestions that by at least the 11th century BCE, early Iron Age Tell
Tayinat represented the center of a kingdom named Palastin or Walastin, with one king being a
certain Taita, “Hero and King of Palastin”, best known from inscriptions in the Aleppo Temple
[60–63]. Later historical records, dating to the 9th-early 8th centuries BCE, refer to the kingdom
as Patina or Unqi [64–66]. The Assyrians took control of the city in 738 BCE and the region
became part of their province of Kinalia under an Assyrian governor [65–69].
The end of the first primary period of occupation at Tell Tayinat in the late 3rd millennium
BCE corresponds in general with the period of change and re-orientation across much of the
Old World from around 4200 years BP or 2200 BCE [16–19, 25]. In the northern Levant, this
episode is in general associated with the EB IVB period. The overall dates for the wider period
of societal change, commonly associated with a shift(s) in climate affecting especially the Old
World region, are largely uncontested—although the exact timings, scale, extent, coherence
and uniformity of the climate episode remains debated even in the Mediterranean-Levant
region (e.g. [70–73]). Correlating with the end of the Akkadian Empire and the First Intermediate Period in Egypt, a beginning for this period of change in the later 23rd century BCE and
especially around 2200 BCE is largely agreed. It is generally accepted that there is a period(s) of
apparently cooler and drier conditions in this region that lasts until around the 20th century
BCE (ending broadly by around 1900 BCE) [16–19, 25, 30, 31, 70–74, 77, 78]. The area for
debate is exactly whether, how, and how comprehensively, the latter causes the former [4, 7–8,
16, 19, 25, 31, 35, 75, 76]. The site of Tell Leilan in northeastern Syria offers a closely resolved
date for the beginning of this period [30, 31], as do a variety of proxy climate indicators [25,
70–74, 77, 78]. Its end is marked by the re-emergence of wider trade networks and state-polities (like the Middle Kingdom of Egypt, Old Babylonian Period in Mesopotamia) during the
20th century BCE.
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Fig 1. Map showing the Orontes Valley of Northwest Syria and Southeast Anatolia and all the sites discussed in this study. This map
was produced in ArcGIS v 10.7.1 at the CRANE funded Archaeology Centre Digital Innovation Laboratory of the University of Toronto
by compiling GIS Shapefiles and Digital Elevation Data built from publicly available sources including NASA/JPL/NIMA.
https://doi.org/10.1371/journal.pone.0240799.g001
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The issue for Tell Tayinat is to position the site and its EB occupation in terms of this wider
general timeframe. In contrast to regions such as northern Mesopotamia, whose chronologies
have been more closely tied to the 4.2k event, and its apparent historical effects, northern
Levantine chronologies generally have not accounted for this event. The general chronological
framework for the northern Levant, largely based on sequences from Hama, Ebla and the early
Amuq excavations [79], is generally agreed upon, with the EB IVB period conventionally
dated to ca. 2300–2000 BCE. More recently, the creation of an EBA-MBA transitional subdivision, ca. 2100–2000 BCE, has been proposed [34, 80, 81]. This chronological framework, however, has been developed primarily from relative ceramic sequences and has not been
anchored to 14C dates [34, 79, 82]. An independent and direct timeframe is thus lacking. More
recently this situation has started to change. 14C dates pertaining to several late 3rd millennium
BCE sites have been published, including Tell Mardikh/Ebla [83], Rawda [34, 84], Qatna [85]
and Umm el-Marra [34]. The suggested date for the destruction of Palace G at Ebla, representing the local transition from the EB IVA to EB IVB, is suggested to date to 2367–2293 BCE,
with ca. 54% probability [83], roughly in line with the conventional date for this transition,
and placing the 4.2ka (2200 BCE) climate event firmly during the EB IVB period.
The Early Iron Age is more problematic. There has been a long-standing challenge resolving Iron Age chronology in the northern Levant in this period [51, 56, 86, 87]. The close of the
Late Bronze Age is characterized by the collapse of the wide-reaching and literate trading systems of previous centuries [15, 40–42, 88–90]. We also lose the well-defined sequence of historical rulers from the unified New Kingdom of Egypt. The result is that archaeologists lack
the confident ability to employ replicated material culture associations to tie object types,
assemblages, and sites across the eastern Mediterranean to the historical chronology of Egypt.
This situation has led to much scholarly uncertainty and debate over dates based on relatively
scarce, ambiguous, or contradictory evidence (e.g. [56, 90]). The past couple of decades have,
unsurprisingly, seen scholars trying to find alternative means to establish secure chronological
timeframes for the early Iron Age in several areas of the East Mediterranean and Aegean, and
have–almost inevitably–created controversy as previous hypotheses are challenged, usually by
new radiocarbon evidence [86, 87, 91–97].
In the northern Levant, especially, there has been lack of both data and scholarly focus.
After the collapse and transformation of the well-known Late Bronze Age civilizations and
their major, often ‘palatial’, centers around the close of the 13th century BCE and into the early
12th century BCE [11, 15, 42, 88, 89, 90], the social, political and economic processes of the
subsequent earlier Iron Age are much less well understood [51]. This is particularly true in the
period stretching from the late 12th through 10th centuries BCE, where historical documentation has been scarce. Although new inscriptional evidence is beginning to provide a historical
framework for this period, the precise chronology of these historical developments remains
fluid, uncertain, and largely based on paleographical grounds as newly emerging finds regularly require the revision of historical chronologies and king lists [60–62, 98, 99]. In the 9th–8th
centuries BCE, historical documentation becomes more frequent from Neo-Assyrian records,
as a result of their increasing contacts with this region, and then their takeover and administrative control from the late 8th century BCE onward [65–68, 100]. Following the conquest of
Kunulua–the ancient name in this period for Tell Tayinat–by the Assyrian ruler Tiglath-pileser
III in 738 BCE, Tayinat became the capital of the Assyrian province of Kinalia [58, 64, 65, 101].
The available textual evidence suggests that in the intervening period, the larger political structures of the Late Bronze Age had vanished and in their place was a collection of relatively small
territorial states [45, 46, 51, 55, 100–103]. The trajectories and chronologies of these profound
changes and of the emergence of these new socio-political formations remains largely unclear.
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Hence establishing a defined and robust chronology for a key site like Tell Tayinat represents a
critical step towards a more nuanced understanding of this time period.
In contrast to the southern Levant and a few other areas, where the widespread use of radiocarbon evidence to address issues of Iron Age chronology has led to the development of a large
dataset of chronometric evidence (e.g. [87, 91–97]), available radiocarbon data in the northern
Levant is extremely scarce [15, 23, 51, 104]. This has led to the development of a series of relative regional chronologies, often employing widely varying chronological terminologies based
on locally-defined or somewhat arbitrary subdivisions [86, 105–108]. These are often based on
linkages in material culture and styles within the Levant and with the Aegean and Cyprus [56,
109]. As a result, the issue of chronology has been problematic and largely based on circular
reasoning and imprecise criteria.
One of the key discoveries during recent excavations at Tell Tayinat is the articulation of a
sequence of early Iron Age remains, after a settlement hiatus during the Middle and Late
Bronze Ages, that were unattested in the earlier excavations at the site [45–47, 51, 55, 110].
With an area from ca. 12–20 hectares in extent, Tell Tayinat is one of the larger early Iron Age
sites known in the eastern Mediterranean, and represents an important regional sequence for
the early Iron Age in the northern Levant. As a result, we report work aimed at remedying the
lack of chronological data for this region through establishing a high-resolution calendar timescale for early Iron Age Tell Tayinat. The use of data from Tell Tayinat for the development of
a regional sequence is particularly appropriate, given the important role the site played in the
early development of radiocarbon dating. A sample of charcoal from Tell Tayinat in fact
appeared on Libby’s famous ‘curve of knowns’ as a measurement by the University of Chicago.
Libby wrote:
“The next sample, which is marked “Tayinat,” is from a house in Asia Minor which was
burned in 675 B.C. It was wood from the floor of a central room in a large hilani (“palace”) of
the “Syro-Hittite” period in the city of Tayinat in northwest Persia. Its known age is 2625 ± 50
years” [111].
This statement is historic, but also both remarkable and (retrospectively) distressing. A
charcoal sample of the scale required at this time for radiocarbon dating likely had a considerable number of tree-rings. Thus it could quite well today have offered a potentially important
dendrochronological sample, or least a highly resolved dendro-14C-wiggle-match sample.
Such a sample could have enabled precise dating (as undertaken at some other Anatolian
Bronze and Iron Age cases [78, 112–116]) of some considerable value, perhaps tied to a specific
construction episode at the site (its context from the floor in a central room suggests a fallen
roof beam). Sadly, no charcoal recovered so far in the recent Tayinat excavations has been of
anywhere near such a scale for dendrochronological analysis, and the whereabouts of Libby’s
original sample or any others that may have been collected in the 1930s remains unknown.
The confidence expressed in the dating of the context and sample from the site is also striking,
and almost certainly misplaced, given the complex history of the specific bīt-hilāni palace from
which the sample was taken (Rooms I-J, 1st floor in Building I) (e.g., [53, 57, 117, 118]).
In view of these research opportunities and the current limitations in terms of dating, our
project therefore seeks to integrate the archaeology with the radiocarbon evidence to achieve a
secure timeframe for Tell Tayinat in both the late Early Bronze Age and the Early Iron Age.
We use organic samples (identified wood charcoal and especially short-lived seed material)
from well-defined archaeological contexts at Tell Tayinat for a program of radiocarbon dating.
In particular, we have carefully selected sets of short-lived sample material where possible–
offering ages contemporary with use–from stratigraphic sequences. These circumstances,
where we have an archaeologically-ordered sequence of contexts and samples, allows in addition the application of Bayesian chronological modeling approaches [119–123], where prior
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archaeological or historical knowledge can be integrated with the radiocarbon probabilities, in
order to achieve more precise and more robust chronologies.
Materials and methods
Samples and 14C dates
We reviewed and identified the available organic sample materials from the Tell Tayinat
Archaeological Project (https://tayinat.artsci.utoronto.ca/) and its excavation program. The
Tayinat landowners, in particular the Kuseyri family, permitted work on their land. All necessary permits were obtained for the described study, which complied with all relevant regulations. The Directorate of Cultural Heritage and Museums of Turkey granted the research
permits necessary to conduct each of the Tell Tayinat excavation seasons. All fragments of
wood charcoal chosen for examination that were larger than 2 mm were fractured by hand or
with a steel razor blade to create fresh transverse, radial, and tangential planes, in order to
examine the wood anatomical structure. After fracturing, samples were supported in a sand
bath and examined under a Motic K-400P stereo microscope at x6 to x50 magnification and
an Olympus BX51 polarizing microscope at x50 to x500 magnification. The micro-anatomical
features of each section were documented, photographed, and compared with those from
modern reference collection materials, standard reference texts [124, 125], and the InsideWood online database (https://insidewood.lib.ncsu.edu/). Seed and non-wood botanical
remains were identified by comparing sample morphological characteristics with modern reference materials and reference seed atlases (e.g., [126, 127]). A LEO 1550 field emission scanning electron microscope (FESEM) was used for high magnification observation of plant
micro-features and high-quality image capture.
Following identification, we selected a number of samples (both wood charcoal and shortlived seeds) for which reasonably secure archaeological associations are available (as is inevitable at a complicated multi-period tell site with such a multi-phase stratigraphic sequence, the
work of this project has in fact led to the reassessment of a few contexts–see below). The general Tell Tayinat site stratigraphic sequence is set out in Table 1; further stratigraphic description and the discussion of associated material culture can be found in [48, 50, 51, 53, 110, 118].
The samples ultimately selected for 14C dating and any comments related to their archaeological contexts are listed in Table 2. These samples were then radiocarbon dated at the Oxford
Radiocarbon Accelerator Unit. Acid-Base-Acid (ABA) sample pretreatment, target preparation, and Accelerator Mass Spectrometry (AMS) 14C dating were performed following methods described previously [128–130]. Isotopic fractionation has been corrected for employing
the δ13C values measured on the AMS–the quoted δ13C values were measured independently
on a stable isotope mass spectrometer (±0.3‰ relative to VPDB). The 49 new 14C dates
acquired are listed in Table 3.
Bayesian chronological modeling
In order to best estimate and quantify the calendar age ranges for the Tayinat archaeological
phases we employed Bayesian Chronological Modeling [119–123, 131], employing OxCal 4.3.2
software [119, 121, 132] (https://c14.arch.ox.ac.uk/oxcal.html), in order to integrate prior
archaeological sequence information with the radiocarbon dating probabilities from the measured samples (Tables 1–3). OxCal terms such as “Sequence”, “Phase”, and “Boundary”, are
capitalized in the text and figures below. We employ the current revised northern hemisphere
radiocarbon calibration dataset, IntCal20 [133]. The results for the periods under investigation
are only slightly different when compared with the previous IntCal13 dataset [134] and we
compare the results for Model 2 below. We also briefly discuss the issue of the potential
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Table 1. The Tell Tayinat general stratigraphic sequence indicating contexts of radiocarbon dated samples. Descriptions of associated stratigraphy and material culture can be found in [48, 50, 51, 53, 110, 118]. The conventional dates for the associated periods are indicated following [105–106] for the Iron Age and [34] for the Early
Bronze Age, while previously published dates for the main Tayinat phases are indicated in parentheses and italics following [53].
General Site
Phases
Historical Periods [34,
105–106] and Previous
Dates [53]
Field 1
Field 2
Field 3
Field 7
Comments
Modern
Modern
1
1a/b
1
1
Modern topsoil and disturbances. Includes
Chicago trenches
2a?
2a
Field 1: renovation, reuse Temple II [53, 118];
Field 2: renovation, reuse Building XVI [118]
1c
1
Iron III, ca. 738–600 BCE,
(720–680 BCE)
2a
2a
No samples analyzed
2 Late 2
Iron II, ca. 900–738 BCE
(825–720 BCE)
2 Late 1
2b
2b1-2
2b
OxA-30320
OxA-32164,
32166, 32167,
32168, 32169
OxA30309
GAP?
2b3
2b
Field 1: earliest phase of Temple II? [53, 118];
Field 2: fill immediately above stone paving
outside Building XVI [118]
2c
Field 2: earliest phase of Building XVI, stone
paving [118]
3
Field 2: Sounding below Building XVI [118]
OxA- 32165
30312?
2 Middle B
GAP?
3
3a?
OxA-30321
2 Middle A
(2)
2c
OxA30315
?
Field 1: Infill of ditch/street [118]
OxA-32170, 32171, 32172
2 Middle A
(1) and BP1
Iron I-II trans.
2d
2 Early
Iron I, ca. 1200–900 BCE
(875–825 BCE)
GAP
3b?
4
Field 1: Ditch and sherd paved street [118]; Field
2: Chicago Building Period 1, Building XIV [53,
118]
4b-5a-5b
4?
5
Field 2: Domestic occupation cut by foundations
of Building XIV [118]
6
Field 1: Ephemeral occupation, primarily pits
[51]
OxA-30322,
30318
3
3
4
4
5a
4a
5a
6
5?
7
Field 1: Major architectural phase, domestic?
[51]
Field 1: Domestic occupation [51]
OxA-30324, 30329, 30563,
30565
5b
5b
Field 1: Domestic occupation [51]
OxA-30310, 30311, 30324,
30563, 30565, 32141, 32142,
32143, 32162, 32163
6a
6a
Field 1: Domestic occupation [51]
OxA-30314, 30319, 30326,
30327, 30328, 30421
6b
6b
OxA-30317, 30323, 30421,
30564, 32140, 32139
6c
6c
Field 1: Earliest IA architecture, domestic [51,
110]
OxA-30313
Field 1: Earliest IA re-occupation, no
architecture, primarily pits [51, 110]
GAP
Late Bronze Age
GAP
No occupation
GAP
Middle Bronze Age
GAP
No occupation
(Continued )
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The chronology of Tell Tayinat and two historical inflection episodes, around 4.2ka BP, and following 3.2ka BP
Table 1. (Continued)
General Site
Phases
Historical Periods [34,
105–106] and Previous
Dates [53]
7
EBIVB, ca. 2300-2100/2000
BC
Field 1
Field 2
7
8–9
OxA-30325, 32134, 32135,
32136, 32137, 32138, 32347
8a
8a
8b
Field 3
Field 7
Comments
Field 1: Ephemeral terminal EB occupation. No
architecture [48, 50]
OxA-32132, 32133
Field 1: Debris associated with destruction of
FP8b structure [48, 50]
8b
Field 1: Construction of large structure [48, 50]
OxA-30316
9
EBIVA-B, ca. 2300 BC
9
Field 1: Short intermediate phase between
construction phases [48, 50]
10
EBIVA, ca. 2500–2300 BC
10
Field 1: Large structure, evidence of destruction.
Excavated 2017
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relevance of a small Mediterranean region growing-season offset for high-precision 14C age
calibration (see below).
Where possible, we sought to employ short-lived (annual) samples for dating contexts,
since these samples–if they are in their primary stratigraphic context related to human use–
offer dates directly relevant to the contexts of discovery. Within OxCal, we tested the coherence of the short-lived samples with the model using the General Outlier model of OxCal
[135]—labelled as “SL”, for short-lived, in the OxCal runfiles in the S1 File—in which a Posterior value is calculated for each dated element versus the acceptable Prior value of 5 (that is: a
5% probability of being an outlier). We also consider the OxCal Agreement value for each
individual sample (the approximate satisfactory value is 60) and for the overall model (Amodel
and Aoverall values–again the satisfactory level is about 60). It is important to stress that each
run of complicated OxCal models achieves very slightly different results, although for wellconstrained model elements within such models, results typically do not vary by more than
zero to a couple of years. We quote typical examples where the model converged successfully
for the dated elements (Convergence, C, values of 95 or greater).
We also included a number of wood charcoal samples. These introduce issues of in-built
age, which we tried to minimize by selecting (when possible) samples from juvenile stems and
branches, and shorter-lived species. The expectation is that from a random population, some
dated wood will be older (even much older) than the find context, but many samples will only
be a little older to around about the contemporary age (whether outer rings, young trees, or
branches/twigs), but with a little noise. To try to allow for and to compensate for this, we
employed the Charcoal Plus Outlier model in OxCal [136, 137], allowing us to better estimate
the date at which groups of charcoal samples from a context were actually used by humans,
especially when information from dates on short-lived samples could also be incorporated
within the relevant phase grouping. (Note: to use the Charcoal Plus Outlier model, an OxCal.
prior file must first be loaded–we list the relevant file for use as /IA.prior in S1 File.) For discussion and illustration of how the use of the Charcoal Plus Outlier model (or the standard
Charcoal Outlier model in OxCal [135]) is key to achieving a plausible age model for Tell Tayinat, integrating both the terminus post quem (TPQ) information (with varying lengths of the
“post” in the terminus post quem) from long-lived charcoal samples with the contemporary age
information provided by dates on short-lived samples (where they are in the correct context
associations), see S2 File (and compare shifts to more recent age ranges for the wood-charcoal
samples shown in S1–S3 Figs). We employ the Charcoal Plus Outlier model as more
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The chronology of Tell Tayinat and two historical inflection episodes, around 4.2ka BP, and following 3.2ka BP
Table 2. Samples for 14C dating from Tell Tayinat obtained by this project. For comments on some of the sample contexts, see the notes below the table. Tayinat General Period Scheme refers to the General Site Phases as identified in Table 1. Local Field Phase refers to the individual phasing schemes devised independently for each
excavation area, outlined in Table 1.
Laboratory ID,
OxA-
Sample ID Area Field.
Square
Locus Pail Period
Local Field Phase
(FP)
Tayinat General Period
Scheme
Sample
30309
SA1238
3
H3.77
21
45
Iron II?
2b
2 Late 2
Olea europaea pit
30310
SA1204
1
G4.56
135
265
Iron I
5b
5b
Olea europaea pit
30311
SA1204
1
G4.56
135
265
Iron I
5b
5b
Olea europaea pit
30312
SA4778
2
G4.38
8
75
Iron II/
III?
2b3
2 Late 1a
Olea europaea pit
30313
SA6449
1
G4.56
246
548
Iron I
6c
6c
Quercus sp.
30314
SA3329
1
G4.66
0b
0b
Iron I
6a
6a
Quercus section Cerris
30315
SA7829
7
G4.58
16
59
Iron II
3?
2 Middle B
Salicaceae
30316
SA6442
1
G4.55
258
604
EB IVb
8b
8b
Pinus brutia
30317
SA4791
1
G4.56
194
380
Iron I
6b
6b
Tamarix sp.
30318
SA1683
2
G4.46
11
37
Iron I
5a
2 Early
Vitis vinifera pip
30319
SA4793
1
G4.56
196
386
Iron I
6a?
6a?
Betulaceae cf. Ostrya
carpinifolia
30320
SA4205
1
G4.56
188
367
Iron I
6b, but intrusive from Reassigned to 2 Late 2
2b
Cicer arietinum seed
30321
SA7839
2
G4.48
38
130
Iron II
3
2 Middle B
Bark
30322
SA792
2
G4.35
18
66
Iron I
5b
2 Early
Pinus brutia
30323
SA4749
1
G4.56
194
381
Iron I
6b
6b
Tamarix sp.
30324
SA1202
1
G4.56
112
245
Iron I
5a/b
5a/b
Betulaceae
30325
SA3091
1
G4.55
154
298
EB IVb
7
7
Pinus brutia
30326
SA1236
1
G4.56
127
225
Iron I
6a
6a
Fraxinus sp.
30327
SA3959
1
G4.56
174
330
Iron I
6a
6a
Betulaceae cf. Ostrya
carpinifolia
30328
SA3959
1
G4.56
174
330
Iron I
6a
6a
Betulaceae cf. Ostrya
carpinifolia
30329
SA1200
1
G4.56
98
170
Iron I
5a?
5a?
Evergreen Quercus
30421
SA4198
1
G4.56
181
359
Iron I
6a/b?
6a/b?
Rhamnus / Phillyrea
30563
SA1199
1
G4.56
112
177
Iron I
5a/b
5a/b
Olea europaea pit
30564
SA4805
1
G4.56
206
410
Iron I
6b
6b
Pinus brutia
30565
SA1210
1
G4.56
112
245
Iron I
5a/b
5a/b
Deciduous Quercus
32132
SA5307
1
G4.55
271
496
EB IVb
8a
8a
Olea europaea pit
32133
SA5339
1
G4.55
271
507
EB IVb
8a
8a
Olea europaea pit
32134
SA3977
1
G4.55
216
369
EB IVb
7
7
Olea europaea pit
32135
SA6479
1
G4.56
252
559
EB IVb
7
7
Olea europaea pit
32136
SA6533
1
G4.56
270
601
EB IVb
7
7
Olea europaea pit
32137
SA6466
1
G4.56
249
554
EB IVb
7
7
Olea europaea pit
32138
SA6497
1
G4.56
261
578
EB IVb
7
7
Olea europaea pit
32139
SA5113
1
G4.56
214
435
Iron I
6b (but residual?)
6b (but residual?)
Olea europaea pit
32140
SA5533
1
G4.56
232
494
Iron I
6b, but intrusive from Reassigned to 5b
5b
Olea europaea pit
32141
SA1973
1
G4.56
119
226
Iron I
5b
5b
Olea europaea pit
32142
SA1974
1
G4.56
143
271
Iron I
5b
5b
Olea europaea pit
32143
SA1975
1
G4.56
135
268
Iron I
5b
5b
Olea europaea pit
32162
SA1976
1
G4.56
138
275
Iron I
5b
5b
Olea europaea pit
32163
SA1976
1
G4.56
138
275
Iron I
5b
5b
Olea europaea pit
32164
SA5076
2
G4.37
7
23
Iron II/
III?
2b1
2 Late 2
Olea europaea pit
(Continued )
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The chronology of Tell Tayinat and two historical inflection episodes, around 4.2ka BP, and following 3.2ka BP
Table 2. (Continued)
Laboratory ID,
OxA-
Sample ID Area Field.
Square
Locus Pail Period
Local Field Phase
(FP)
Tayinat General Period
Scheme
Sample
32165
SA5311
2
G4.37
7
37
Iron II/
III?
2b1 (but residual?)
2 Late 1a
Olea europaea pit
32166
SA5313
2
G4.48
27
95
Iron II/
III?
1cC
2 Late 2
Olea europaea pit
32167
SA5458
2
G4.28
6
45
Iron II/
III?
2b1
2 Late 2
Olea europaea pit
32168
SA2859
2
G4.47
5
37
Iron II/
III?
2b1
2 Late 2
Olea europaea pit
32169
SA4777
2
G4.38
11
76
Iron II/
III?
2b1
2 Late 2
Olea europaea pit
32170
SA2309
1
G4.66
81
204
Iron II
2c
2 Middle A2
Olea europaea pit
32171
SA2306
1
G4.65
94
244
Iron II
2c
2 Middle A2
Olea europaea pit
32172
SA2907
1
G4.66
88
228
Iron II
2c
2 Middle A2
Olea europaea pit
32347
SA3975
1
G4.55
232
393
EB IVb
7
7
Olea europaea pit
a
SA4778 was from the surface of the central room of Temple XVI, whose latest use phase should be Iron III based on the historically dated tablet found within it [68].
However, we regard this sample and also SA5311 as likely residual material belonging to the earlier use of this temple space and not from its very last phase of use.
Hence these samples are assigned to Phase 2 Late 1.
b
This sample (outer rings) was from a larger wood sample extracted from the balk; hence it is designated as Locus 0, but it is equivalent to G4.66 Locus 33 and hence
Phase 6a.
c
This sample was excavated from a locus identified as fill from the Chicago excavation trench and hence was assigned to FP1c (modern); however, this sample lay
immediately above the stone paving and produces a date consistent with other samples from the same context (Phase 2 Late 2), hence for modelling purposes we treat it
as Phase 2 Late 2 in the Tayinat general sequence.
https://doi.org/10.1371/journal.pone.0240799.t002
appropriate for the reasons outlined in the studies cited [136, 137], however, very similar
results are obtained with the OxCal Charcoal Outlier model [135], as we illustrate in the case
of our Model 2, see S3 File. Our stated calendar date ranges are thus estimates of the dated
periods or episodes but, where a range of charcoal samples alone are involved, these likely still
include some aspect of a terminus post quem (TPQ) range, and thus might be described as estimates of a close TPQ and/or the date range. Where the identical sample was dated twice we
combined the two measurements into a single weighted average value [138].
Four samples require comment. Sample SA4205 (date OxA-30320) was recorded as from a
Phase 6b (Iron Age I) context, but is clearly an intrusive Iron Age II sample as evident from
the 14C age. After re-examination of the excavation records, it was determined to be intrusive
from the immediately overlying foundations of a late Iron II building (Building II) that were
cutting into these FP6b levels, and is therefore (re-)assigned to Phase 2 Late 2. This datum is
shown in purple in the models below to show it was reassigned. Sample SA5311 (date OxA32165) came from a Phase 2 Late 2 context, but its 14C age is a little older than the other Phase
2 Late 2 samples. However, based on examination of site records, we believe that, like SA4778
(OxA-30312), this sample in fact comes from earlier activity within Phase 2 Late overall—
Phase 2 Late 1—versus the final use of this area in the subsequent Phase 2 Late 2 and so is
residual material in terms of Phase 2 Late 2. We have thus reassigned the sample to Phase 2
Late 1. It is shown in purple in the models below to indicate that it was residual and reassigned.
Sample SA5113 (date OxA-32139) yields a 14C age that is around 1000 years older than the
other short-lived samples from its supposed Phase 6b context. This situation likely indicates
that it is, unrecognized at the time of excavation, (highly) residual material, likely originating
from underlying EB IVB layers. It is thus shown in orange in the models below. Finally, Sample
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Table 3.
The chronology of Tell Tayinat and two historical inflection episodes, around 4.2ka BP, and following 3.2ka BP
14
C dates on the samples in Table 2.
14
C Age ± 1σ
δ13C‰
Laboratory ID
Sample ID
Tayinat General Period Scheme
Sample
OxA-30309
SA1238
2 Late 2
Olea europaea pit
2519±26
-21.8
OxA-30310
SA1204
5b
Olea europaea pit
2810±28
-23.4
(years BP)
OxA-30311
SA1204
5b
Olea europaea pit
2806±31
-23.1
OxA-30312
SA4778
2 Late 1
Olea europaea pit
2679±28
-20.9
-25.9
OxA-30313
SA6449
6c
Quercus sp.
3038±28
OxA-30314
SA3329
6a
Quercus section Cerris
2948±26
-25.8
OxA-30315
SA7829
2 Middle B
Salicaceae
2679±27
-30.0
OxA-30316
SA6442
8b
Pinus brutia
4048±29
-23.4
OxA-30317
SA4791
6b
Tamarix sp.
2962±27
-26.2
OxA-30318
SA1683
2 Early
Vitis vinifera pip
2837±27
-26.5
OxA-30319
SA4793
6a?
Betulaceae cf. Ostrya carpinifolia
2918±27
-26.8
OxA-30320
SA4205
Reassigned to 2 Late 2
Cicer arietinum seed
2546±27
-24.6
-24.6
OxA-30321
SA7839
2 Middle B
Bark
2739±26
OxA-30322
SA792
2 Early
Pinus brutia
3047±26
-24.0
OxA-30323
SA4749
6b
Tamarix sp.
2929±28
-26.6
OxA-30324
SA1202
5a/b
Betulaceae
2821±26
-26.6
OxA-30325
SA3091
7
Pinus brutia
3871±29
-24.1
OxA-30326
SA1236
6a
Fraxinus sp.
2808±29
-25.7
OxA-30327
SA3959
6a
Betulaceae cf. Ostrya carpinifolia
2896±26
-25.2
OxA-30328
SA3959
6a
Betulaceae cf. Ostrya carpinifolia
2891±27
-25.4
-23.7
OxA-30329
SA1200
5a?
Evergreen Quercus
2829±27
OxA-30421
SA4198
6a/b?
Rhamnus/Phillyrea
2872±31
-23.4
OxA-30563
SA1199
5a/b
Olea europaea pit
2857±27
-23.6
OxA-30564
SA4805
6b
Pinus brutia
2882±26
-24.0
OxA-30565
SA1210
5a/b
Deciduous Quercus
2861±27
-24.7
OxA-32132
SA5307
8a
Olea europaea pit
3861±31
-20.2
OxA-32133
SA5339
8a
Olea europaea pit
3799±28
-20.1
OxA-32134
SA3977
7
Olea europaea pit
3737±29
-22.5
OxA-32135
SA6479
7
Olea europaea pit
3784±30
-22.3
OxA-32136
SA6533
7
Olea europaea pit
3830±29
-21.4
OxA-32137
SA6466
7
Olea europaea pit
3765±30
-22.1
OxA-32138
SA6497
7
Olea europaea pit
3697±29
-20.6
OxA-32139
SA5113
6b (but residual?)
Olea europaea pit
3717±30
-21.8
OxA-32140
SA5533
6b (reassigned to 5b)
Olea europaea pit
2806±30
-21.4
OxA-32141
SA1973
5b
Olea europaea pit
2886±28
-21.2
OxA-32142
SA1974
5b
Olea europaea pit
2805±30
-21.2
OxA-32143
SA1975
5b
Olea europaea pit
2786±29
-22.3
OxA-32162
SA1976
5b
Olea europaea pit
2839±26
-20.6
OxA-32163
SA1976
5b
Olea europaea pit
2811±27
-20.7
OxA-32164
SA5076
2 Late 2
Olea europaea pit
2516±26
-23.2
OxA-32165
SA5311
2 Late 1
Olea europaea pit
2732±27
-21.7
OxA-32166
SA5313
2 Late 2
Olea europaea pit
2506±25
-20.8
OxA-32167
SA5458
2 Late 2
Olea europaea pit
2545±25
-23.2
OxA-32168
SA2859
2 Late 2
Olea europaea pit
2511±25
-21.8
OxA-32169
SA4777
2 Late 2
Olea europaea pit
2486±26
-22.1
OxA-32170
SA2309
2 Middle A2
Olea europaea pit
2814±26
-21.8
(Continued )
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The chronology of Tell Tayinat and two historical inflection episodes, around 4.2ka BP, and following 3.2ka BP
Table 3. (Continued)
Laboratory ID
Sample ID
Tayinat General Period Scheme
Sample
14
C Age ± 1σ
δ13C‰
(years BP)
OxA-32171
SA2306
2 Middle A2
Olea europaea pit
2784±27
-19.7
OxA-32172
SA2907
2 Middle A2
Olea europaea pit
2798±27
-20.9
OxA-32347
SA3975
7
Olea europaea pit
3772±26
-19.5
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SA5533 (date OxA-32140), which was assigned to FP6b, was identified as an outlier in this
phase. Upon re-examination of the field records, it was determined that the area in which this
sample was excavated was noted at the time of excavation as belonging to a later intrusive pit
cutting FP6b levels, and which was assigned a new locus number the following day. This sample should therefore be considered to originate from pit locus 233/234, and has thus been reassigned to FP5b for modelling purposes.
We built an initial model incorporating all the data available and the stratigraphic information summarized in the Tayinat General Period Scheme in Table 1: Model 1. We explicitly do
not make historical assumptions. Thus we do not assume that the transition from Phase 2 to
Phase 1 marks the Assyrian conquest in 738 BCE—rather, we run the models with the 14C data
and stratigraphic knowledge we have independently, and then consider where an event like
the Assyrian conquest likely occurred in terms of the site sequence. Without specific confirmatory evidence, it is dangerous (and often circular) in practice and in theory to assume an historical association with any particular destruction or stratigraphic change [139, 140]. Similarly,
we also make no assumptions based on existing dates derived from assessments from relative
chronologies. As noted above, these are largely based on flexible or circular reasoning. Even in
recent historic periods, uncritical dating based on artefact presence/absence is fraught with
problems around availability, consumer choice, curation, time-lags and the nature of disposal,
and can easily end up being misleading (e.g. [141, 142]). We instead employ the stratigraphic
sequence and then let the 14C data directly describe the temporal scale.
There are two exceptions to the preceding general statements. First, although we do not
assume that the transition from Phase 2 to Phase 1 is coeval with the Assyrian conquest of 738
BCE, it is nonetheless historically attested knowledge that after 738 BCE the Assyrians ruled at
Tayinat (Kunulua). Thus it is reasonable to regard some part of the final phase at Tayinat as
dating after 738 BCE; hence we use an After command within Phase 1 (Iron III) where we
have no 14C data. The second element of historical knowledge is that because of the presence
of a text with Esarhaddon’s adê of 672 BCE inside a Phase 1 temple at Tayinat [65, 68, 143], we
may regard the end of the Tayinat occupation sequence as at least after 672 BCE—again we
employ an After command in the OxCal code. In reality, it is possible that occupation at Tayinat continued for some decades (or more) after 672 BCE, maybe towards ~600 BCE. However,
we currently lack any 14C data or other secure historical date. Thus the dating model ends at
present more or less immediately after 672 BCE for lack of any quantifiable information.
The available stratigraphic information pertains only to the level of the site Phases recognized (see Table 1 for current Tell Tayinat relative stratigraphic sequence). Within each Phase
we adopt the conservative assumption that the samples are random samples from a uniform
distribution, and so could come from any point within the Phase with equal probability: a uniform prior assumption. An obvious exception are the two dates on short-lived samples (olive
pits) from the period 8a “destruction event”, which we might assume to lie at the close of
Phase 8a. However, these are the only data for Phase 8a (so we lack a ‘distribution’)–hence we
use the weighted average value of these two dates as the date of the 8a destruction event. One
of the short-lived samples in our dataset, OxA-32139 (sample SA5113), noted above, stands
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The chronology of Tell Tayinat and two historical inflection episodes, around 4.2ka BP, and following 3.2ka BP
out as a complete outlier with the General Outlier model in OxCal [135] with a Prior of (the
maximum value) 100 > Posterior value of 5 (and an OxCal Agreement value, A, less than 6,
well below the satisfactory threshold value of >60). This sample, found in a Phase 6b context,
is (as noted above) approximately 1000 years older and would likely seem to be a residual sample from the known underlying Early Bronze IV strata in this excavation unit. Notably OxA30320 and OxA-32140, which we re-assigned (see above), and the ‘problematic’ sample just
noted (OxA-32139)—all unrecognized at the time of excavation—come from period 6b and
from field square G4.56 in Area 1. One is clearly residual from earlier layers (OxA-32139), one
is clearly intrusive from later levels (OxA-30320), and one was confirmed as intrusive from
(somewhat later) FP5b levels based on excavation records (OxA-32140). This reflects the challenging nature of the excavation contexts in this excavation square, which displayed frequent
pitting activities and some disturbance from the foundations of later Iron II constructions.
Most interestingly, as regards associations with regional climate change history and environmental contexts, the Tell Tayinat occupation sequence, as currently represented by the TAP
excavations, includes EB IVB levels, followed by reoccupation spanning the Iron Age I-III, with
no intervening Middle or Late Bronze Age contexts (see above). Thus residual EBA material in
an otherwise Iron Age context is possible, due to the absence of intervening strata. A few
instances of somewhat later Iron Age materials occurring as intrusives into early Iron Age contexts are a predictable issue of concern in a multi-period excavation like Tell Tayinat, particularly in an area cut by the foundations of later Iron Age constructions. We exclude OxA-32139
from the remainder of our analyses. The revised model (minus OxA-32139), Model 2, was then
employed for the site dating. OxCal runfiles for Model 1 and Model 2 are listed in S1 File.
Results
We first considered Model 1, which employs all the data, and then the very slightly revised
Model 2 removing the outlier, OxA-32139, as noted above. Model 1 does not quite achieve satisfactory OxCal Amodel and Aoverall values given the outlier just noted (typically ~59–60), with one
very low individual OxCal Agreement value (<6) for OxA-32139. The Model 1 run values
quoted in Table 4 and the model run shown in S1 and S2 Figs achieved satisfactory Convergence (C) values �95 for all elements. However, it should be noted that, especially without use
of a high initial kIterations value, runs of Model 1 in a number of cases fail to achieve �95 Convergence values for some of the late elements in the model (Phase 2 Late 1 onwards). This problem usually does not occur once OxA-32139 is excluded in Model 2. Fig 2 shows the Phase 6
part of Model 1 and indicates the extreme outlier date of OxA-32139 on sample SA5113. For
the full Model 1, see S1 File, S1 and S2 Figs. The placement of the Model 1 dated elements versus
IntCal20 (and with the previous IntCal13 shown for comparison) is shown in S3 Fig.
Figs 3 and 4 show Model 2. This is a revision of Model 1 removing OxA-32139. Model 2
achieves acceptable OxCal agreement index values overall, with Amodel around 81 and Aoverall
around 81, above the accepted threshold value of 60 (typical values based on several runs).
Usually all elements now achieve satisfactory Convergence values �95. There are no outliers
among the dates on short-lived samples above the 6% level. These are very minor discrepancies, and the outlier modeling slightly down-weights their influence. We thus employ this
model as our best estimate for the Tell Tayinat chronology. The calendar age ranges for various
of the elements from both Model 1 and Model 2 are detailed in Table 4. They are very similar.
Discussion
The EB IV dates indicate that the terminal EB occupation at Tell Tayinat lies in the 23rd to
22nd centuries BCE. This suggests that the site was active as the 4.2 ka climate event began
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Table 4. Selected modeled calendar age ranges from the models and outputs shown in Figs 3–5. TPQ refers to a date solely from a long-lived sample(s). Typical
results shown; very small variations (often of around 1 year) occur between different model runs (we illustrate by giving results from a very similar but different model run
in S3 File, where a number of start/end dates for some of the ranges are 1 year different). For comparison of the results for Model 2 with the previous IntCal13 [134], see
below in Table 6. Whole ranges only are listed (compare with S3 File where sub-ranges are listed). The Time Span Phases 4&3 Date estimate combines the separate start
(Phase 4) and end (Phase 3) Date estimates in the model.
Model 1 with all data,
Amodel ~59, Aoverall ~60
Model 2 excluding OxA-32139,
Amodel ~81, Aoverall ~80–81
68.2% hpd
95.4% hpd
68.2% hpd
Date BCE
Date BCE
Date BCE
Date BCE
Phase 8b EB IVB TPQ
2518–2330
2585–2243
2517–2331
2585–2245
Phase 8a, EBIVB Destruction Event
2335–2211
2397–2202
2335–2211
2396–2202
Phase 7 Date Estimate
2219–2140
2282–2074
2219–2140
2281–2074
Boundary End Phase 7
2186–2104
2200–2005
2187–2104
2199–2006
Phase 6c, Iron I TPQ
1311–1164
1380–1103
1309–1159
1379–1101
Phase 6b Date Estimate
1124–1045
1181–1023
1122–1045
1176–1023
Phase 6a TPQ and/or Date
1050–1006
1086–993
1052–1006
1089–992
Phase 5b Date Estimate
1008–987
1019–970
1008–987
1019–970
Phase 5a Date Estimate
999–975
1006–952
998–976
1006–952
Time Span Phases 4&3 –No Samples
987–951
997–921
987–951
997–920
Phase 2 Early Date Estimate
970–931
982–894
971–931
982–894
Phase BP1, Chicago, and Phase 2 Middle A1 –No Data
955–911
961–866
955–911
961–866
Phase 2 Middle A2 Date Estimate
925–855
933–841
926–855
933–841
Phase 2 Middle B Date Estimate
900–839
910–828
900–839
910–828
Phase 2 Late 1 Date Estimate
836–782
868–766
836–782
868–766
Phase 2 Late 2 Date Estimate
772–753
793–733
772–753
791–735
Boundary Transition Phase 2 to 1
764–743
771–672
764–743
771–721
Assyrian Conquest
Boundary End Tayinat Sequence
95.4% hpd
738
738
738
738
672–669
674–668
672–669
674–668
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(23rd century BCE) and likely continued at least into the early part of the following century.
We have relatively few data as yet from the more substantial earlier phases of occupation,
including the construction of a major structure in FP8b [48, 50], for which only a terminus
post quem can be provided. The destruction of this structure, however, appears to be dated
somewhere between 2300–2200 BCE, relatively early in the EB IVB period. Furthermore, no
dates have yet been obtained from the recently excavated preceding levels, most notably from
another substantial construction that appears to have been destroyed by fire and has been tentatively dated to the EB IVA period (FP10). More data, however, pertains to the terminal
phases of EB occupation, after the destruction of the FP8 structure. The final EB IV Phase 7, in
particular, exhibits some spread in 14C ages (Figs 3 and 5) among the olive pits represented,
with two (OxA-32138, OxA-32134) perhaps indicating a date range around/after 2100 BCE.
Phase 7 appears to represent a relatively drawn out period of reducing circumstances at the
site following the destruction of the more substantial architecture of Phase 8. We lack any constraint on the end of Phase 7, since there is then a gap in site occupation. The end Boundary
could reach, in round terms, to ~2100 BCE at 68.2% hpd and ~2000 BCE at 95.4% hpd. The
data to hand suggest that Tell Tayinat Phase 7 occupation likely ran at least well into the 22nd
century BCE, and perhaps further.
This phase is associated with the decline and eventual abandonment of the site at the end of
the phase, representing the terminal EB occupation at the site, after which occupation shifts to
the neighboring site of Tell Atchana (ancient Alalakh) for the Middle and Late Bronze Ages,
beginning in the terminal phases of the EB. This abandonment thus appears to occupy a period
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Fig 2. The portion of Model 1 showing the period 6 data to illustrate the very large outlier OxA-32139 on sample SA5113 (see text). This
sample is excluded from the remainder of the modeling in our study. Data from OxCal 4.3.2 and IntCal20 with calibration curve resolution set
at 1 year. The OxCal Agreement (A) values, the Posterior v. Prior values from the OxCal General Outlier model (O) for the short-lived samples,
and the Convergence (C) values are all shown. The dates on wood charcoal samples with the Charcoal Outlier Plus model applied always have
an outlier value of 100/100. The light-shaded red probability distributions for each dated sample are the non-modeled calibrated age
probability distributions for each sample in isolation. The dark red probability distributions are the modeled (posterior density) calendar age
probability distributions. The lines under each probability distribution indicate the modeled 68.2% and 95.4% highest posterior density (hpd)
ranges. (Note: OxCal from version 4.4.1 uses 68.3% hpd ranges, however, since we employed OxCal 4.3.2 in this paper, we list 68.2% ranges
following OxCal version 4.3.2.).
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around and shortly after the onset of the 4.2 ka cultural-climate episode. It has been increasingly recognized that this climate episode did not significantly impact sites in the northern
Levant, and specifically sites in the Euphrates and Orontes river valleys, in the same manner as
observed in northern Mesopotamia [34, 38]. This does not contradict the general climate shift
to more arid conditions observed in a number of records, including directly from barley finds
from archaeological sites in the region [144]. But it does highlight that such a general regional
impact has very different effects locally, depending on a range of human, geographic/environmental and technological factors [144]. Even during the climate episodes around 4200 BP
(~2200 BCE) and 3200 BP (~1200 BCE), barley grains from coastal sites, for example, show little substantive drought stress [144]. In the northern Levant, in particular, it has been proposed
that the karstic geology of these regions and their resulting access to underground aquifers as
more stable water sources in times of drought, positioned them as “refugia” for “habitat-tracking populations” in times of climate crisis [25, 145, see also ref. 35]. Favorable physiographic
and edaphic features, or irrigation technology and low-risk, sustainable agricultural practices
may also mitigate local impacts.
Such comparatively favorable conditions, as well as possible mitigation strategies, may be
reflected in the archaeobotanical evidence from Tayinat. In both FP8 and FP7, barley and freethreshing wheat are well-represented, and emmer wheat is also present in significant quantities
[48, 146, 147]. Although barley is the dominant cereal crop, the frequencies of (more waterdemanding) wheat are notably higher compared to sites further east, which typically relied
much more heavily on barley [148]. This suggests better water availability in the Amuq compared to other inland areas in the late 3rd millennium, but the frequency of emmer may simultaneously represent a strategy aimed at minimizing yield variation. Similarly, Tayinat displays
very high ubiquities in FPs 8–7 for a range of water-demanding species such as olive and
grape, particularly when compared to other inland sites [146, 147]. Notably, no significant
shift in species representation appears between FP8 and FP7 [147]. Carbon isotope analysis of
cereal grains in addition indicates no evidence of drought stress in either barley or wheat during either phase, and crops may in fact be slightly better watered in FP7 compared to FP8
[147].
On the other hand, the zooarchaeological assemblages associated with FP8 and FP7 show
notable differences [48]. Sheep and goat have a greater focus in absolute numbers compared to
pig and cattle in FP7 in comparison to FP8, although cattle appear to have contributed the
most significant amount of meat to the diet in both phases. Kill-off patterns for sheep and goat
suggest a mixed animal management strategy was employed in both phases, with meat, milk
and wool all likely playing a significant role. Notably, hunting is frequent in FP8, but becomes
much less common in FP7. Hunting in FP8 focused on red deer (Cervus elaphus), although
roe deer (Capreolus capreolus), gazelle and hare/rabbit are also present. Similarly, fish is found
in very high proportions in FP8, and although it remains high in FP7 it declines significantly.
Similar patterns are seen in bird, turtle and amphibian remains, although these are all found in
much lower numbers than fish.
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Fig 3. Model 2 (excluding OxA-32139): Bayesian chronological model for Tell Tayinat Iron Age sequence, part 1. The Amodel and Aoverall
values are satisfactory versus the threshold value of 60 (Table 4). Data from OxCal 4.3.2 and IntCal20 with calibration curve resolution set at 1
year. The Individual OxCal Agreement values (A), the Posterior v. Prior values from the OxCal General Outlier model for the short-lived
samples (O), and the Convergence (C) values are all shown. The wood charcoal samples with the Charcoal Plus Outlier model applied all have a
Posterior/Prior value of 100/100. The light-shaded red probability distributions for each dated sample are the non-modeled calibrated age
probability distributions for each sample in isolation. The dark red probability distributions are the modeled calendar age probability
distributions. The line under each probability distribution indicates the modeled 95.4% highest posterior density (hpd) range. Cyan color
indicates the start and end Boundaries of the model. Green color indicates the Boundaries calculated within the Tell Tayinat Sequence. Blue
color indicates an OxCal Date estimate query for a Phase (this quantifies the time period within the start and end Boundary for the relevant
Phase).
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The results suggest a much more varied subsistence strategy in FP8, relying on a combination of domestic livestock and significant supplementation from hunting, fishing and fowling.
In FP7, in contrast, hunting and fishing decrease notably and reliance on livestock increases.
This is particularly true of sheep, goat and cattle, although pig declines slightly in FP7. Despite
the decline visible architecturally after the destruction of the major building at the end of FP8,
these observations suggest that FP7’s subsistence economy became more intensively focused
on domestic livestock than in the preceding period.
Overall, despite their approximate temporal coincidence, a direct causal relationship
between Tayinat’s late EB decline and this climate episode is difficult to support, as it seems
much more likely that the site failed to recover from its destruction during the preceding century (or more–since the length of Phase 7 is unclear). This destruction is positioned alongside
evidence for similar destruction levels in the northern Levant, most notably at the major
regional center of Tell Mardikh-Ebla, where the Palace G complex was destroyed ~2350–2300
BCE [83]. The agents responsible for such destructions remain debated [149–151], but in the
aftermath, Ebla was rapidly reconstructed and regained its status as a primary regional center,
although perhaps on a more modest scale than observed in the preceding period [34, 39, 152].
Tayinat, in contrast, although re-occupied, does not seem to have recovered its primate position in the region, with the principal settlement shifting to nearby Tell Atchana, which then
remained the central settlement throughout the Middle and Late Bronze Ages. This shift, in
contrast to wider regional reconstructions of major climatic crisis, has often been postulated as
the result of local factors, such as a decisive shift in the course of the Orontes River [153, 154].
Indeed, in light of the close proximity of Tell Tayinat and Tell Atchana, this change may be
more reflective of a local political and spatial reorganization than a major break in settlement.
Our Iron Age data and modeling provide a refined and robust absolute timeframe for the
early Iron Age at Tell Tayinat, independent of cultural and historical assumptions, running
from around the 12th through mid-8th centuries BCE (Table 4, Figs 3 and 4). The site’s earliest
Iron Age occupation thus lies squarely in the period following the collapse of the Late Bronze
Age ca. 1200 BCE, and represents an alternative model and context for this period of transformation and climate challenge in the Old World [51]. Discussion here will focus primarily on
the dates from the early Iron Age (i.e. Iron I-early Iron II, ca. 12th-9th centuries BCE, Table 4);
further discussion of the late Iron II dates here will await a future publication about the Iron
II-III transition at the site (i.e. 8th-7th centuries BCE) [155]. The dates calculated are consistent
with the broad chronological sequence constructed based on linkages to Aegeanizing ceramics
of the Late Helladic (LH) IIIC tradition [45, 46, 51, 55, 56]. The earliest levels (Field Phase [FP]
6c), which largely precede the widespread use of Aegeanizing LH IIIC-style ceramics at the site
[51, 110], begin in the 12th century BCE. Aegeanizing influences begin to appear in the late
12th century (FP6b) and proliferate in the 11th century (FP6a-5), continuing in declining frequencies into the mid-10th century (FP4-3, 2 Early) [51, 56, 110]. These dates are consistent
with a more or less conventional chronology and do not support recent suggestions for much
earlier (or ‘higher’) dates for the end of the Late Bronze Age (and the LH IIIB to LH IIIC
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Fig 4. Model 2 (excluding OxA-32139): Bayesian chronological model for Tell Tayinat Iron Age sequence, part 2. Otherwise, see caption to Fig
3.
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transition) [97]. We place Tell Tayinat Phase 6b-a and its assemblage and associations with the
Late Helladic IIIC tradition [51, 56, 110] from the late 12th century BCE onwards, in line with
other recent 14C based work in the Aegean and East Mediterranean [94, 96, 156–158].
The original excavations at the site produced a monumental structure known as Building
XIV that was assigned to Building Period 1 [53]. The current excavations have identified the
foundations of this structure [45–47, 118], but have not yet produced any datable contexts for
radiocarbon analysis. The stratigraphic position of the foundational remains of Building XIV,
however, allow the proposition of a narrow date range, based on the model presented here, in
the mid-late 10th century BCE, contemporary with Phase 2 Middle A1. The latter phase is associated in Field 1 with the construction of a major ditch and sherd-paved street, located immediately to the south of Building XIV [118]. The material assemblage associated with this
building and with the street contains Red-Slipped Burnished Ware, whose fluorescence is conventionally dated to the Iron Age II, although only small quantities were found [118]. Instead,
the ceramic assemblage for phases 2 Middle A(1) and 2 Middle A(2) is dominated by plain
wares, suggesting a date between Phases 2 Middle A and 2 Middle B (ca. 900 BCE) for the Iron
I-II transition. Samples analyzed that post-date the Iron I-II transition at the site all originate
from the Iron II occupation at Tell Tayinat, ending in Phase 2 Late 2. This appears likely to
precede closely the 738 BCE date when the Assyrians conquered the site and assumed its control [65, 66, 118]. The modelled dates for Phase 2 Late (Table 4) are consistent with this assessment. The Date estimate is 772–753 BCE (68.2% hpd) and 791–735 BCE (95.4% hpd),
indicating the period lies shortly before the Assyrian conquest. The Boundary estimate for the
Phase 2 to 1 transition, 764–743 BCE (68.2% hpd), 771–721 BCE (95.4% hpd) is either just
before, or at about the same time as, the Assyrian conquest. We currently lack any 14C data
from Phase 1 to clarify the dating after Phase 2. It seems inherently likely that the Phase 2 to 1
transition probably is associated with the Assyrian conquest and associated changes following
738 BCE and this assumption appears compatible with the available 14C-based timeframe.
No Iron III context has yet been the subject of 14C dating, but the dates might thus be anticipated to fall in the period of Assyrian control following 738 BCE and must continue until
after at least 672 BCE [66, 118, 143].
Our chronology allows comparison of some persons known from the epigraphic record
and likely linked with names thought to refer to Tell Tayinat or its territory [47, 60–62] (see
Table 5). The Aleppo Citadel inscription of king Taita, hero and ruler of Palistin, is dated to
the 11th century BCE on the basis of paleography and iconography [60–62]. The currently proposed chronological scheme would link this ruler to Tayinat Phases 6a to 5. A putative second
Taita, reconstructed from inscriptional evidence from Meharde and Sheizar, has been attributed on similar grounds to the (early?) 10th century BCE [62]. This ruler would thus most
likely be associated with the later Iron I materials at the site (FPs 4–3). As such, contrary to earlier assumptions, the reigns of these rulers likely preceded the monumental constructions of
Building Period 1 (Buildings XIII and XIV). This time period is designated Phase 2 Middle A
(1). Dates are estimated within the model from the surrounding data and constraints, since
there are no 14C data for this period, at about 955–911 BCE, 68.2% hpd, and 961–866 BCE,
95.4% hpd (Table 4). Any potential monumental constructions associated with the reigns of
the earlier 10th century rulers remain to be discovered. Other possible 10th century rulers
attested on the Arsuz stelae [62, 98], notably Suppiluliuma (I), who claims to have conducted a
war in Cilicia, may be more plausibly related to the construction of the monumental structures
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Fig 5. The Tell Tayinat Phase 7 data from Model 2 in Fig 3 shown in more detail. The lines under each probability distribution indicate the
modeled 68.2% and 95.4% highest posterior density (hpd) ranges.
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associated with Building Period 1 in the mid-late 10th century BCE. These prominent figures
also appear to be associated with a significant reconfiguration of urban space at the site, and an
expansion of their kingdom’s territorial extent. By the 9th century BCE, Tell Tayinat had
become the city of Kunulua, the apparent royal city of the Neo-Hittite kingdom of Patina (or
Unqi) [47, 61, 159]. The ruler Suppiluliuma (II), attested in a monumental inscription recently
discovered at Tell Tayinat, likely corresponds to the Sapalulme mentioned in the campaign
records of Shalmaneser III [62, 63, 159, 160]. Qalparunda, a ruler of Patina, paid tribute to
Shalmaneser III in both 857 and 853 BCE, and may correspond to the Halparuntiyas mentioned in Tayinat Inscription 1 [47, 159–161]. These two rulers would likely correspond with
the time of Phase 2 Middle B.
Here too, a direct association between various reconstructions of 13th-10th centuries BCE
climatic crisis in the eastern Mediterranean and Near East (e.g. [3, 20–23, 26, 43, 162–164])
and the trajectory of development at the site of Tell Tayinat is difficult to discern. The decline
of the Late Bronze Age settlement of Tell Atchana begins at least a century earlier than the proposed major crisis that occurs ca. 1200 BCE and afterwards, and the site’s occupation shrinks
significantly during the 13th century BCE [165, 166]. In contrast, during the proposed Early
Iron Age shift to more arid conditions, the site of Tell Tayinat appears to flourish [51, 110].
Historical records suggest the formation and expansion of a major political entity centered
around the Amuq Plain and Tell Tayinat during the 11th-10th centuries BCE [60–62], the
height of the reconstructed climate crisis. Although monumental architecture contemporary
to the earliest historically attested rulers has not yet been uncovered by the current excavations,
the archaeological evidence suggests a prosperous settlement that remained tied into longTable 5. Suggested correlations between Tayinat Phases, absolute dates as reconstructed here by Bayesian modelling of 14C dates, rulers attested in historical
sources, and conventional northern Levantine Iron Age periodization. For Iron I, alternating pale orange and white coloration denotes the four-period division as outlined in [51]; for Iron II-III, gray and white coloration denotes the separation between Tayinat Phases.
Absolute Dates (BCE)
Tayinat Phases
Early 12th century
6c
Historically Attested Kings, after [62]
General Iron Age Periodization, modified after [105, 106]
Iron IA
Mid-12th century
Late 12th century
6b
Early 11th century
6a
Mid-11th century
Late 11th century
Iron IB
Taita I
5b
5a
Early 10th century
4
Taita II
Iron IC
3
Mid-10th century
2 Early
Manana
Late 10th century
2 Middle A(1), BP1
Suppiluliuma I
2 Middle A(2)
Halparuntiya I
2 Middle B
Lubarna I?
Early 9th century
th
Suppiluliuma II (Sapalulme)
Mid-9 century
Iron I-II Transition
Iron IIA
Qalparunda II
Late 9th century
2 Late 1
Early 8th century
2 Late 2
Lubarna II, Surri/Sasi
Iron IIB
Mid-8th century
Late 8th century
1 (not dated)
Assyrian Conquest (738 BCE)
Iron III
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distance trade networks. Major monumental constructions and a significant reorganization of
urban space are attested in contexts now dated to the late 10th century (Building Period 1,
Phase 2 Middle A(1)), culminating in the formation of the major Neo-Hittite royal city of
Kunulua in the 9th century BCE. In combination with the historical evidence, this suggests that
the rise of Tayinat, and the foundations of the later Iron Age social and political institutions at
the site, had their origins during a period frequently defined (elsewhere in the wider region) as
one of crisis and collapse.
The archaeological evidence from Tayinat points toward a variety of mechanisms that may
have contributed to this Iron Age fluorescence. The stability of the location of the central settlement in the Amuq in the south-central part of the plain throughout the Bronze and Iron
Ages suggests that the short-distance shift in site location from Tell Atchana to Tayinat during
the 12th century BCE could not have been a response to large-scale climatic degradation or to
major shifts in economic networks. Rather, it seems likely to represent an adaptive response to
locally changing conditions, which may have included a shift in the course of the Orontes
River [153–154]. An Orontes paleo-channel identified between the sites of Tayinat and Atchana has been suggested to date to the Iron Age, and the shift of the main settlement to the
north bank of the river would have maximized the site’s access to agricultural land in the plain
north of the river [154]. Furthermore, the site of Tayinat al-Saghir, a small mound artificially
constructed between Tayinat and Atchana at some point during the Iron Age, may represent a
quay that would have allowed the main settlement to control riverine traffic, cementing its economically strategic position [118].
Palaeobotanical evidence likewise provides additional detail to this complex picture. Crop
isotope data from Tayinat suggest minimal evidence for drought stress during the early Iron
Age, particularly for barley, and generally suggest improvement in crop water status over the
course of the Iron I [147, 167]. Furthermore, continued cultivation of water-demanding species such as grape, olive and fig at Tayinat during the Iron I does not suggest that water availability was a significant issue [167]. These arboricultural taxa reach their highest ubiquities
and frequencies in FP6 and generally decline somewhat thereafter [51]. Free-threshing wheat
also remains the most frequent crop plant throughout the Iron I, although barley increases in
ubiquity during FPs 6–5 [51]. This increased focus on free-threshing wheat has been suggested
to represent a labor optimization strategy [167]. Emmer is notably more ubiquitous during the
Iron I than in the preceding LBA or during the later parts of the Iron Age, which may represent a strategy employed to minimize the risk associated with fluctuations in yield [51]. The
frequency of large-seeded vetches such as bitter vetch (Vicia) and grass pea (Lathyrus) are similarly interpreted as indicative of a risk-spreading strategy that prevents crop failures, stabilizes
crop yields and maintains soil fertility [167]. In the Iron Age, the frequent co-occurrence in
northern Levantine sites of a focus on free-threshing wheat and large vetches has been interpreted as an attempt to achieve balance between the water input and labor requirements of
agricultural production [167].
The zooarchaeological evidence points to a reasonably consistent strategy of animal raising
through the Iron I, although differences exist between FP6b-a and the later phases of the Iron I.
Pig consumption is at its most frequent during FP6b-a, although cattle consistently represents
the most significant contributor of meat to the diet [51]. Mortality curves for sheep and goat in
the Iron I suggest strategies aimed at exploitation of secondary products (dairy and particularly
wool/hair), and there is evidence for significant textile production beginning already in the late
12th century [51, 110]. Hunting evidence is found in very low frequencies in all phases, while
fishing is noticeably more frequent in FP6b-a compared to later Iron I phases [51].
In addition to the political decline of Alalakh during the 13th century BCE, textual sources
suggest that problems with grain production and/or distribution may have resulted in the
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The chronology of Tell Tayinat and two historical inflection episodes, around 4.2ka BP, and following 3.2ka BP
diversion of local agricultural products to elsewhere within the Hittite Empire [15, 42, 168], as
well as a concurrent decline in regional population within the Amuq as a result of Hittite
deportations that preceded the climate crisis [168]. The frequencies of wild taxa associated
with moist environments suggest a wetter environment at Tayinat during FP6 [51, 147]. The
Amuq has historically experienced a fluctuating degree of marshiness [118, 153], and this may
explain the increased appearance of fish in the zooarchaeological assemblage during the same
period [51]. In contrast, FPs 5–3 are associated with wild plant taxa that may indicate an
expansion in agricultural area during the late 11th-10th centuries BCE through the use of new
arable fields that were likely left uncultivated during the 12th-early 11th centuries BCE [51].
This suggests an agricultural extensification strategy during this time that may be related to
increasing population in the Amuq Plain (and stable political-economic circumstances), as
identified from settlement data [51, 56, 169], and which may reflect increasing urbanization
connected to the formation of the kingdom of Palistin. Indeed, comparison of the apparent
lower town plans extant and accessible via geophysics at Tell Tayinat would suggest that Tayinat records long-term organic town growth through the course of the Iron Age, whereas the
nearby site of Zincirli, in contrast, perhaps largely records a new post-Assyrian conquest layout
[169]. This may indicate only limited post-Assyrian-conquest changes beyond the monumental constructions of the elite zone in the upper city at Tayinat [118].
As suggested for the late EB period (see above), the local environment (through a combination of the Orontes River and the karstic geology) may have provided a suitable context in this
region for greater resilience despite the arguments and evidence for climate change (more arid
conditions) following ~3200 BP (~1200 BCE). Crop isotope data from Tayinat mentioned
above are consistent with broader regional patterns that suggest the Orontes and coastal
regions were somewhat less affected by drought stress [144, 167]. Comparative studies would
also indicate that the nature of the association between climate change and social change is,
predictably, complex and contingent on the nature and history of the relevant societies and
their specific vulnerabilities (e.g. evolved socio-environmental mis-matches [170]). In particular, climate change alone is often not the key element that overcomes societal resilience; rather,
it is sharp, volatile, fluctuations with a duration of several years that seem the greater threat to
established complex agrarian societies in the preindustrial period (e.g. [29, 171–176]).
A final issue is the robustness of the 14C calibration record with respect to the Tell Tayinat
samples. The new IntCal20 [133] 14C dataset is greatly enhanced (in terms of data for several
periods, and quality) compared with IntCal13 [134]. However, for the periods of time relevant
to Tell Tayinat and its dated elements, there are in fact only relatively small changes (see S3
Fig) and no major new underlying data contributions. Table 6 compares the results for Model
2 (in Table 4) with the same model run with IntCal13 (an example is cited with good OxCal
Amodel and Aoverall values and all Convergence, C, values �95 –note that many runs do not
achieve good Convergence in the final part of the model unless the kIterations value is
increased, from about or after Phase 2 Late 1). There are few substantial differences; date
ranges are largely similar.
A potentially greater concern is recent work indicating the possible relevance at times of a
modest/small Mediterranean growing season-related 14C offset for high-resolution calendar
age determinations from the lower elevation Mediterranean region [177–180]. There is an
intra-annual (i.e. seasonal) atmospheric 14C cycle, with a winter low and a summer high. Thus
plants growing (and photosynthesizing) in the Mediterranean region at lower elevations in the
winter through spring period (and stopping growth by the summer) may yield a recognizably
slightly different 14C history versus the IntCal record derived from trees from central and
northern Europe and North America that grow primarily from later spring and right through
the summer [179, 180]. However, the fact that the overwhelming majority of the short-lived
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The chronology of Tell Tayinat and two historical inflection episodes, around 4.2ka BP, and following 3.2ka BP
Table 6. Comparison of the modeled calendar age ranges from Model 2 with IntCal20 [133] (Table 4) versus runs of Model 2 using the previous IntCal13 calibration
curve [134] and the Hd GOR Mediterranean dataset [180]. Data from example runs with satisfactory Amodel and Aoverall values (>60) and with all dated elements with
satisfactory Convergence values (�95). Whole ranges listed. Phase 4 and 3 Date estimates combined as start Phase 4 to end Phase 3.
Model 2 IntCal20,
Model 2 IntCal13
Model 2 Hd GOR
Amodel 81, Aoverall 81
Amodel 71, Aoverall 73
Amodel 88, Aoverall 88
68.2% hpd
95.4% hpd
68.2% hpd
95.4% hpd
68.2% hpd
Date BCE
Date BCE
Date BCE
Date BCE
Date BCE
Date BCE
Phase 8b EB IVB TPQ
2517–2331
2585–2245
2518–2328
2587–2251
2519–2330
2588–2250
Phase 8a, EBIVB Destruction Event
2335–2211
2396–2202
2332–2215
2388–2203
2332–2215
2389–2203
Phase 7 Date Estimate
2219–2140
2281–2074
2223–2141
2280–2074
2223–2141
2281–2074
Boundary End Phase 7
2187–2104
2199–2006
2187–2101
2199–2012
2187–2101
2199–2009
Phase 6c, Iron I TPQ
1309–1159
1379–1101
1304–1158
1377–1101
1308–1138
1400–1084
Phase 6b Date Estimate
1122–1045
1176–1023
1121–1047
1173–1023
1105–1025
1162–1003
Phase 6a TPQ and/or Date
1052–1006
1089–992
1051–1005
1085–992
1037–994
1078–981
Phase 5b Date Estimate
1008–987
1019–970
1005–986
1017–973
996–976
1007–953
Phase 5a Date Estimate
998–976
1006–952
995–976
1004–958
986–955
991–940
Time Span Phases 4&3 –No Samples
987–951
997–920
985–954
995–932
971–928
981–905
Phase 2 Early Date Estimate
971–931
982–894
968–936
981–908
945–899
963–878
Phase BP1, Chicago, and Phase 2 Middle A1 –No Data
955–911
961–866
949–917
963–877
909–864
938–853
Phase 2 Middle A2 Date Estimate
926–855
933–841
927–897
934–850
889–843
926–835
Phase 2 Middle B Date Estimate
900–839
910–828
902–854
913–833
855–827
886–820
Phase 2 Late 1 Date Estimate
836–782
868–766
843–789
871–770
828–781
848–763
Phase 2 Late 2 Date Estimate
772–753
791–735
776–752
797–735
769–750
788–731
Boundary Transition Phase 2 to 1
764–743
771–721
764–742
767–721
759–739
766–717
738
738
738
738
738
738
672–669
674–668
672–669
674–668
672–669
674–668
Assyrian Conquest
Boundary End Tayinat Sequence
95.4% hpd
https://doi.org/10.1371/journal.pone.0240799.t006
samples in this Tayinat study are olive pits (~86% of such samples) likely partly mitigates this
issue. Unlike many trees or cereals and other field crops in lower elevation eastern Mediterranean environments, olive fruit grow from later spring through the autumn and hence comprise a 14C record that is only partly (not largely) out of kilter with the IntCal record. Grapes
also grow through, and are harvested late in the summer to start of autumn, and again, in contrast with field crops like cereals, thus minimize any likely growing season offset [179–181] (in
all, olive pits and a grape seed include 89% of the short-lived samples dated at Tayinat). Nonetheless, for interest, we compare the Model 2 results run against the Mediterranean-Anatolian
Hd Gordion (GOR) dataset [180] in Table 6. This Hd GOR record is only a sketch for the
Mediterranean—much more work is needed—and lacks data for the EB part of the Tayinat
record and ends during the period of the late Tayinat samples. Thus it offers only a partial indication of possible differences. The Hd GOR record is largely similar to IntCal20 for most periods, and some of the changes in IntCal20, versus IntCal13, reduce what were previously
further instances of differences when comparing the Hd GOR record versus IntCal13 [180],
for example especially in the earlier 16th century BCE (see the region labelled 1 in S4 Fig).
Nonetheless, within general similarity, there are some periods, notably at the times of reversals
and plateaus in the radiocarbon record, where the Hd GOR record exhibits some offset. Two
examples are indicated (labelled as 2, 3) in S4 Fig. A possible additional area of minor offset
might also exist at the reversal/plateau covering the earlier to mid-9th century BCE labelled
with the? in S4 Fig. The last two of these offsets could have minor relevance and effect on the
Tayinat dates—but, noting that the types of short-lived samples dated likely minimize any
effect (see above), this is likely insignificant.
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The chronology of Tell Tayinat and two historical inflection episodes, around 4.2ka BP, and following 3.2ka BP
As with the IntCal13 model, a number of model runs fail to achieve satisfactory Convergence values especially for the last part of the model from the Phase 2 Late 1 Date Estimate
onwards unless the kIterations value is increased. Over multiple runs, there is also more noise
in the late part of the model. The results in Table 6 are for a typical successful run with good
Convergence. The results are generally similar to those from IntCal20 and IntCal13. However,
in line with the observations of a small growing season offset issue and its possible consequences [177–180], we notice some modest effects, and especially during periods of reversals
and plateaus in the radiocarbon calibration curve [179, 180]. For the periods where the Hd
GOR [180] dataset applies (thus only for Tayinat Phases 6 onwards), the date ranges for some
of the Tayinat phases (from Phase 6c to Phase 2 Middle B) are a little later, variously by around
a decade to several decades considering the 68.2% hpd ranges. Consistent with previous observations [179, 180], the largest shift indications (of ~12–47 years in the 68.2% hpd ranges)
occur in the 10th and early to mid-9th centuries BCE when there are reversals in the 14C calibration curve [133, 134] (S4 Fig). In view of the comments above about olive fruit and grapes, the
effective (i.e. real) offset for Tell Tayinat is likely a little smaller. Nevertheless, this exercise
highlights an area of possible minor chronological variation. Where this offset does apply, the
effect is to achieve slightly later (more recent) calendar age estimates (something of potential
relevance to debates over Iron Age chronology in the southern Levant, for example [179]). The
very substantial change in atmospheric radiocarbon levels (the steep slope in the calibration
curve) from the late 9th through mid-8th centuries BCE (linked with a major change in radiocarbon production and thence changes in solar activity processes [182]) (S4 Fig) clarifies that,
regardless of any minor variations, the Tayinat Phase 2 Late 2 data are mid-8th century BCE
and thus likely represent the last pre-Assyrian conquest (738 BCE) phase at the site.
Conclusions
The absolute dating of the later Early Bronze Age and earlier Iron Age occupation periods at
Tell Tayinat and associated northern Levantine sites has been the subject of debate and ambiguity for many years. The regional chronological frameworks for the northern Levant during
both periods have never been adequately addressed in absolute chronological terms, but rather
have been largely based on relative chronologies derived from regional ceramic sequences.
The chronology of the early Iron Age, in particular, has been linked only approximately to
material and stylistic associations and thence to debates in other areas, in both the Aegean and
the wider East Mediterranean, concerning the centuries following the collapse of the 13th century BCE palace-era Late Bronze Age civilizations. Our chronology, based on the integration
of the archaeological sequence at Tell Tayinat with radiocarbon dates, provides for the first
time a directly relevant, refined, and robust timeframe for this important site and its region.
The chronological framework thus developed places the two major occupation phases at Tell
Tayinat firmly within temporal contexts relevant to ongoing debates about two periods of supposed climate crisis (around and following ca. 4200 BP/2200 BCE and around and following
ca. 3200 BP/ 1200 BCE). The complex and contrasting responses observed at Tell Tayinat during these two transformative periods positions the site as a locus strategic to understanding the
diverse ‘alternative’ developmental trajectories observed during these two intermediate eras.
Supporting information
S1 File. OxCal Runfiles for Model 1 and Model 2 and the.prior File for the Charcoal Plus
Outlier model.
(PDF)
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The chronology of Tell Tayinat and two historical inflection episodes, around 4.2ka BP, and following 3.2ka BP
S2 File. Comparison of a portion of Model 2 (from Phases 6c through 5a) run without the
application of the Charcoal Plus Outlier model (A) versus a run with the Charcoal Plus Outlier
model applied (B) to illustrate the effect and importance of the Charcoal Plus Outlier model in
order to achieve a likely and appropriate age model for Tell Tayinat integrating both data on
long-lived charcoal samples (offering various TPQ ranges) and data on short-lived samples
which (if in correct context association) offer contemporary age estimates.
(PDF)
S3 File. Results for the selected elements of Model 2 as listed in Table 4 comparing the outcomes from a different model run (some results vary by typically around 1 year) with the
Charcoal Plus Outlier model (as in the main text and Table 4) versus the same model run
alternatively with the Charcoal Outlier model [135]. The Charcoal Plus Outlier version has
just three elements with OxCal Agreement values <60 (e.g., typical example, OxA-30326
@56.5%, OxA-32141 @39.6%, OxA-32170 @41.4%), whereas the Charcoal Outlier version has
four elements <60 (e.g., typical example, OxA-30326 @26.6%, OxA-32141 @36.1%, OxA32170 @ 36.9%, and OxA-30315 @53.3%). The date ranges for the selected elements shown are
nonetheless very similar. Whereas whole ranges are listed in Table 4, here sub-ranges are
detailed where present.
(PDF)
S1 Fig. Model 1: Bayesian chronological model for Tell Tayinat Iron Age sequence, part 1.
Data from OxCal 4.3.2 [121, 132, 135] and IntCal20 [133] with calibration curve resolution set
at 1 year. The Individual OxCal Agreement values (A), the Posterior v. Prior values from the
OxCal General Outlier model for the short-lived samples (O), and Convergence values (C) are
all shown. The wood charcoal samples with the Charcoal Plus Outlier model applied all have a
Posterior/Prior value of 100/100. The light-shaded red probability distributions for each dated
sample are the non-modeled calibrated age probability distributions for each sample in isolation. The dark red probability distributions are the modeled calendar age probability distributions. The lines under each probability distribution indicate the modeled 68.2% and 95.4%
highest posterior density (hpd) ranges. Cyan color indicates the start and end Boundaries of
the model. Green color indicates the Boundaries calculated within the Tell Tayinat Sequence.
Blue color indicates an OxCal Date estimate for a Phase.
(TIF)
S2 Fig. Model 1: Bayesian chronological model for Tell Tayinat Iron Age sequence, part 2.
Otherwise, see captions to Fig 3, S1 Fig. The line under each probability distribution indicates
the 95.4% hpd range.
(TIF)
S3 Fig. Model 1 14C dated elements (see S1 and S2 Figs) shown placed against the IntCal20
[133] calibration curve (and with the previous IntCal13 calibration curve [134] shown for
comparison).
(TIF)
S4 Fig. The Heidelberg (Hd) Gordion (GOR) 14C dataset [180], 1σ, shown placed against
IntCal20 [133] (to achieve satisfactory Amodel/Aoverall values for a wiggle-match against
IntCal20 after removing the 14 largest outliers in the dataset). The IntCal13 calibration
curve [134] is shown for comparison. The labels indicate: 1. a region in the 16th century BCE
where previously there was an offset between the Hd GOR dataset and IntCal13 [180] but
which is now largely removed with the revised IntCal20 dataset; 2. and 3. two regions (reversals
and/or plateaus in the calibration curve) where there appear to be positive offsets between the
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The chronology of Tell Tayinat and two historical inflection episodes, around 4.2ka BP, and following 3.2ka BP
Hd GOR data and IntCal20; and? another reversal and plateau where there is perhaps a small
difference between the Hd GOR dataset and IntCal20. A. shows overall comparison, B. shows
detail for the mid-12th to 8th centuries BCE.
(TIF)
Acknowledgments
This work is a contribution from the CRANE project (https://www.crane.utoronto.ca/). We
thank all our excavation collaborators and the team at the Oxford Radiocarbon Accelerator
Unit. We thank the Directorate of Cultural Heritage and Museums of Turkey, which has graciously awarded the research permits necessary to conduct each of the Tell Tayinat excavation
seasons. We thank the ministry representatives who have supported the campaigns each season. We thank the directors and staff of the Antakya Museum, and the Tayinat landowners, in
particular the Kuseyri family, who have generously permitted work on their land. All necessary
permits were obtained for the described study, which complied with all relevant regulations.
BL thanks the Cornell Center for Materials Research Shared Facilities for use of facilities for
organic materials identification work.
Author Contributions
Conceptualization: Sturt W. Manning, Timothy P. Harrison.
Formal analysis: Sturt W. Manning, Brita Lorentzen, Lynn Welton, Stephen Batiuk, Timothy
P. Harrison.
Funding acquisition: Sturt W. Manning, Timothy P. Harrison.
Investigation: Sturt W. Manning, Brita Lorentzen, Lynn Welton, Stephen Batiuk, Timothy P.
Harrison.
Methodology: Sturt W. Manning, Brita Lorentzen, Lynn Welton, Stephen Batiuk, Timothy P.
Harrison.
Project administration: Sturt W. Manning, Timothy P. Harrison.
Resources: Sturt W. Manning, Timothy P. Harrison.
Supervision: Sturt W. Manning, Timothy P. Harrison.
Writing – original draft: Sturt W. Manning, Brita Lorentzen, Lynn Welton, Stephen Batiuk,
Timothy P. Harrison.
Writing – review & editing: Sturt W. Manning, Brita Lorentzen, Lynn Welton, Stephen
Batiuk, Timothy P. Harrison.
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