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Coordinates: 50°12′28″N 5°04′59″W / 50.2078°N 5.0830°W / 50.2078; -5.0830
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{{Short description|River in Cornwall, England}}
{{Use dmy dates|date=April 2022}}
{{Infobox river
{{Infobox river
| name = Carnon River
| name = Carnon River
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| extra =
| extra =
}}
}}
The '''Carnon River''' is a heavily polluted river in [[Cornwall]], England.<ref name=restore>{{cite web|title= Case study:Carnon River: Abandoned Metal Mines|url=https://restorerivers.eu/wiki/index.php?title=Case_study%3ACarnon_River%3A_Abandoned_Metal_Mines|website=Restore|publisher= River Restoration Centre |accessdate=29 January 2018}}</ref> It starts in [[Chacewater]].<ref>{{cite web|url=https://www.google.com/maps/place/50%C2%B015'44.6%22N+5%C2%B009'30.1%22W/@50.262349,-5.1583846,21z/data=!4m14!1m7!3m6!1s0x486b22b45a5f8b3f:0x90389ac77071e96e!2sCarnon+River!3b1!8m2!3d50.2253941!4d-5.1161109!3m5!1s0x0:0x0!7e2!8m2!3d50.2623937!4d-5.1583473|title=Google Maps|website=Google Maps|accessdate=30 January 2018}}</ref> [[Trewedna Water]]<ref>{{cite web|url=https://www.google.com/maps/place/50%C2%B015'44.6%22N+5%C2%B009'30.1%22W/@50.2151296,-5.1044683,17.96z/data=!4m14!1m7!3m6!1s0x486b22b45a5f8b3f:0x90389ac77071e96e!2sCarnon+River!3b1!8m2!3d50.2253941!4d-5.1161109!3m5!1s0x0:0x0!7e2!8m2!3d50.2623937!4d-5.1583473|title=Google Maps|website=Google Maps|accessdate=30 January 2018}}</ref> and [[River Kennall]]<ref>{{cite web|url=https://www.google.com/maps/place/50%C2%B015'44.6%22N+5%C2%B009'30.1%22W/@50.2082438,-5.0943558,17z/data=!4m14!1m7!3m6!1s0x486b22b45a5f8b3f:0x90389ac77071e96e!2sCarnon+River!3b1!8m2!3d50.2253941!4d-5.1161109!3m5!1s0x0:0x0!7e2!8m2!3d50.2623937!4d-5.1583473|title=Google Maps|website=Google Maps|accessdate=30 January 2018}}</ref> flow into the Carnon before it merges with [[Tallack's Creek]] to become [[Restronguet Creek]],<ref>{{cite web|url=https://www.google.com/maps/place/50%C2%B015'44.6%22N+5%C2%B009'30.1%22W/@50.2093576,-5.0839215,16.04z/data=!4m14!1m7!3m6!1s0x486b22b45a5f8b3f:0x90389ac77071e96e!2sCarnon+River!3b1!8m2!3d50.2253941!4d-5.1161109!3m5!1s0x0:0x0!7e2!8m2!3d50.2623937!4d-5.1583473|title=Google Maps|website=Google Maps|accessdate=30 January 2018}}</ref> which eventually flows into [[English Channel|the English Channel]] at the mouth of [[Carrick Roads]].<ref>{{cite web|url=https://www.google.com/maps/place/50%C2%B015'44.6%22N+5%C2%B009'30.1%22W/@50.1543281,-5.0486034,14.04z/data=!4m6!3m5!1s0x0:0x0!7e2!8m2!3d50.2623937!4d-5.1583473|title=Google Maps|website=Google Maps|accessdate=30 January 2018}}</ref>
The '''Carnon River''' ({{lang-kw|Avon Carnon}}) is a heavily polluted river in [[Cornwall]], England, United Kingdom.<ref name=restore>{{cite web|title= Case study:Carnon River: Abandoned Metal Mines|url=https://restorerivers.eu/wiki/index.php?title=Case_study%3ACarnon_River%3A_Abandoned_Metal_Mines|website=Restore|publisher= River Restoration Centre |access-date=29 January 2018}}</ref> It starts in [[Chacewater]].<ref>{{cite web|url=https://www.google.com/maps/place/50%C2%B015'44.6%22N+5%C2%B009'30.1%22W/@50.262349,-5.1583846,21z/data=!4m14!1m7!3m6!1s0x486b22b45a5f8b3f:0x90389ac77071e96e!2sCarnon+River!3b1!8m2!3d50.2253941!4d-5.1161109!3m5!1s0x0:0x0!7e2!8m2!3d50.2623937!4d-5.1583473|title=Google Maps|website=Google Maps|access-date=30 January 2018}}</ref> Both [[Trewedna Water]] and [[River Kennall]] flow into the Carnon before it merges with Tallack's Creek to become [[Restronguet Creek]], which eventually flows into [[English Channel|the English Channel]] at the mouth of [[Carrick Roads]].<ref>{{cite web|url=https://www.google.com/maps/place/50%C2%B015'44.6%22N+5%C2%B009'30.1%22W/@50.1543281,-5.0486034,14.04z/data=!4m6!3m5!1s0x0:0x0!7e2!8m2!3d50.2623937!4d-5.1583473|title=Google Maps|website=Google Maps|access-date=30 January 2018}}</ref>


The [[Nebra sky disc]], a gold-decorated bronze disc found in Germany and dated to the [[Bronze Age]], contains both gold and tin from the Carnon valley.<ref name=Ehser>{{cite journal |last=Ehser|first=Anja |first2=Gregor|last2=Borg |first3=Ernst|last3=Pernicka |title=Provenance of the gold of the Early Bronze Age Nebra Sky Disk, central Germany: geochemical characterization of natural gold from Cornwall|journal=European Journal of Mineralogy|date=2011|volume=23|issue=6|pages=895–910|doi=10.1127/0935-1221/2011/0023-2140|url=http://eurjmin.geoscienceworld.org/content/23/6/895.short|accessdate=1 February 2018}}</ref><ref>{{cite journal | doi = 10.1111/j.1475-4754.2010.00515.x | volume=52 | title=TIN ISOTOPY-A NEW METHOD FOR SOLVING OLD QUESTIONS | year=2010 | journal=Archaeometry | pages=816–832 | last1 = Haustein | first1 = M.}}</ref>
The [[Nebra sky disc]], a gold-decorated bronze disc found in Germany and dated to the [[Bronze Age]], contains both gold and tin from the Carnon valley.<ref name=Ehser>{{cite journal |last=Ehser|first=Anja |first2=Gregor|last2=Borg |first3=Ernst|last3=Pernicka |title=Provenance of the gold of the Early Bronze Age Nebra Sky Disk, central Germany: geochemical characterization of natural gold from Cornwall|journal=European Journal of Mineralogy|date=2011|volume=23|issue=6|pages=895–910|doi=10.1127/0935-1221/2011/0023-2140|url=http://eurjmin.geoscienceworld.org/content/23/6/895.short|access-date=1 February 2018}}</ref><ref>{{cite journal | doi = 10.1111/j.1475-4754.2010.00515.x | volume=52 | title=TIN ISOTOPY-A NEW METHOD FOR SOLVING OLD QUESTIONS | year=2010 | journal=Archaeometry | pages=816–832 | last1 = Haustein | first1 = M.}}</ref> There was also an antler pick discovered, along with some other artefacts in 1790. In 2016, the pick was dated to be from the Early Bronze Age.<ref>{{Cite web |title=New Evidence for Bronze AgeTin Mining |url=http://www.earlyminesresearchgroup.co.uk/page51.html |access-date=2024-01-14 |website=www.earlyminesresearchgroup.co.uk}}</ref>


In 1992 the river was hit by a major pollution incident, when over 45 million litres of [[Acid mine drainage|contaminated water]] from the closed [[Wheal Jane]] mine was released by the collapse of an [[adit]], colouring the river water red. A treatment works has since been installed at Wheal Jane to intercept the contaminated water and treat it to remove suspended metals and restore a neutral pH.<ref name="BBCPump">{{cite web|url=https://www.bbc.co.uk/news/uk-england-26573994|title=Pumping the polluted water from mines - BBC News|work=[[BBC Online]]|accessdate=1 February 2018}}</ref>
In 1992, the river was hit by a major pollution incident, when over 45 million litres of [[Acid mine drainage|contaminated water]] from the closed [[Wheal Jane]] mine was released by the collapse of an [[adit]], colouring the river water red.<ref>{{Cite journal |last=Neal |first=Colin |last2=Whitehead |first2=Paul G. |last3=Jeffery |first3=Hazel |last4=Neal |first4=Margaret |date=2005-02-01 |title=The water quality of the River Carnon, west Cornwall, November 1992 to March 1994: the impacts of Wheal Jane discharges |url=https://pubmed.ncbi.nlm.nih.gov/15680624/ |journal=The Science of the Total Environment |volume=338 |issue=1-2 |pages=23–39 |doi=10.1016/j.scitotenv.2004.09.003 |issn=0048-9697 |pmid=15680624}}</ref> A treatment works has since been installed at Wheal Jane to intercept the contaminated water and treat it to remove suspended metals and restore a neutral pH.<ref name="BBCPump">{{cite web|url=https://www.bbc.co.uk/news/uk-england-26573994|title=Pumping the polluted water from mines - BBC News|work=[[BBC Online]]|access-date=1 February 2018}}</ref>


==See also==
==See also==
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{{Commons category|Carnon River}}
{{Commons category|Carnon River}}
*{{cite web|url=http://environment.data.gov.uk/catchment-planning/WaterBody/GB108048001160|title=Upper Carnon River|work=Catchment Data Explorer|publisher=[[Environment Agency]]}}
*{{cite web|url=http://environment.data.gov.uk/catchment-planning/WaterBody/GB108048001160|title=Upper Carnon River|work=Catchment Data Explorer|publisher=[[Environment Agency]]}}
*{{cite web|url=http://environment.data.gov.uk/catchment-planning/WaterBody/GB108048001231|title=Lower RIver Carnon|work=Catchment Data Explorer|publisher=Environment Agency}}
*{{cite web|url=http://environment.data.gov.uk/catchment-planning/WaterBody/GB108048001231|title=Lower River Carnon|work=Catchment Data Explorer|publisher=Environment Agency}}


{{Cornwall}}
{{Cornwall}}



{{authority control}}
{{authority control}}

Latest revision as of 04:16, 15 January 2024

Carnon River
Carnon River near Point Mills
Carnon River is located in Cornwall
Carnon River
Location within Cornwall
Location
CountryEngland
CountyCornwall
Physical characteristics
Source 
 • locationChacewater, Cornwall
 • coordinates50°15′45″N 5°09′30″W / 50.262394°N 5.158347°W / 50.262394; -5.158347
MouthRestronguet Creek
 • location
Cornwall
 • coordinates
50°12′28″N 5°04′59″W / 50.2078°N 5.0830°W / 50.2078; -5.0830
Basin features
Tributaries 
 • left50°12′51″N 5°05′55″W / 50.214184°N 5.098663°W / 50.214184; -5.098663, 50°12′51″N 5°05′54″W / 50.214208°N 5.098415°W / 50.214208; -5.098415, 50°12′51″N 5°05′54″W / 50.214206°N 5.098334°W / 50.214206; -5.098334, 50°12′45″N 5°05′54″W / 50.212388°N 5.098277°W / 50.212388; -5.098277, 50°12′20″N 5°05′02″W / 50.205645°N 5.083766°W / 50.205645; -5.083766
 • right50°14′14″N 5°08′31″W / 50.237319°N 5.141862°W / 50.237319; -5.141862, 50°13′49″N 5°07′35″W / 50.230265°N 5.126254°W / 50.230265; -5.126254, Trewenda Water 50°12′54″N 5°06′04″W / 50.215071°N 5.101136°W / 50.215071; -5.101136, River Kennall 50°12′25″N 5°05′29″W / 50.206988°N 5.091408°W / 50.206988; -5.091408, Tallack's Creek 50°12′38″N 5°04′59″W / 50.210599°N 5.083176°W / 50.210599; -5.083176

The Carnon River (Cornish: Avon Carnon) is a heavily polluted river in Cornwall, England, United Kingdom.[1] It starts in Chacewater.[2] Both Trewedna Water and River Kennall flow into the Carnon before it merges with Tallack's Creek to become Restronguet Creek, which eventually flows into the English Channel at the mouth of Carrick Roads.[3]

The Nebra sky disc, a gold-decorated bronze disc found in Germany and dated to the Bronze Age, contains both gold and tin from the Carnon valley.[4][5] There was also an antler pick discovered, along with some other artefacts in 1790. In 2016, the pick was dated to be from the Early Bronze Age.[6]

In 1992, the river was hit by a major pollution incident, when over 45 million litres of contaminated water from the closed Wheal Jane mine was released by the collapse of an adit, colouring the river water red.[7] A treatment works has since been installed at Wheal Jane to intercept the contaminated water and treat it to remove suspended metals and restore a neutral pH.[8]

See also

[edit]

References

[edit]
  1. ^ "Case study:Carnon River: Abandoned Metal Mines". Restore. River Restoration Centre. Retrieved 29 January 2018.
  2. ^ "Google Maps". Google Maps. Retrieved 30 January 2018.
  3. ^ "Google Maps". Google Maps. Retrieved 30 January 2018.
  4. ^ Ehser, Anja; Borg, Gregor; Pernicka, Ernst (2011). "Provenance of the gold of the Early Bronze Age Nebra Sky Disk, central Germany: geochemical characterization of natural gold from Cornwall". European Journal of Mineralogy. 23 (6): 895–910. doi:10.1127/0935-1221/2011/0023-2140. Retrieved 1 February 2018.
  5. ^ Haustein, M. (2010). "TIN ISOTOPY-A NEW METHOD FOR SOLVING OLD QUESTIONS". Archaeometry. 52: 816–832. doi:10.1111/j.1475-4754.2010.00515.x.
  6. ^ "New Evidence for Bronze AgeTin Mining". www.earlyminesresearchgroup.co.uk. Retrieved 14 January 2024.
  7. ^ Neal, Colin; Whitehead, Paul G.; Jeffery, Hazel; Neal, Margaret (1 February 2005). "The water quality of the River Carnon, west Cornwall, November 1992 to March 1994: the impacts of Wheal Jane discharges". The Science of the Total Environment. 338 (1–2): 23–39. doi:10.1016/j.scitotenv.2004.09.003. ISSN 0048-9697. PMID 15680624.
  8. ^ "Pumping the polluted water from mines - BBC News". BBC Online. Retrieved 1 February 2018.
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