The first evolutionary appearance of Globigerinoides trilobus primordius (the Globigerinoides dat... more The first evolutionary appearance of Globigerinoides trilobus primordius (the Globigerinoides datum) has been taken to correspond closely with the base of the Aquitanian Stage at its stratotype, Saucats, south-western France. But elsewhere in Aquitaine basin (Escornebéou) the taxon occurs in strata with miogypsinids that are antecedent to those in the Aquitanian stratotype. Biometric comparison of G. trilobus primordius from these localities supports the miogypsinid data. The Escornebéou population is probably more primitive than those from Saucats: heights of apertures and of the spire are greater and chamber overlap is smaller. The test is less compact. As a precise criterion for the base of the Aquitanian Stage, as judged from the stratotype, the appearance of G. trilobus primordius is unreliable. Its first evolutionary appearance precedes this horizon.
Planktonic foraminiferal assemblages and artificial neural network estimates of sea-surface tempe... more Planktonic foraminiferal assemblages and artificial neural network estimates of sea-surface temperature (SST) at ODP Site 1123 (41°47.2'S, 171°29.9'W; 3290 m deep), east of New Zealand, reveal a high-resolution history of glacialinterglacial (GI) variability at the Subtropical Front ...
... 2000).Transfer functions or other methods, based on taxonomic census dataof benthic foraminif... more ... 2000).Transfer functions or other methods, based on taxonomic census dataof benthic foraminifera in one ... Most recent studies have focused on the use of marsh foramini-fera for estimating ... in basin analysis for estimating former water depths in normal salinity shelf, bathyal and ...
Planktonic foraminiferal assemblages and artificial neural network estimates of sea-surface tempe... more Planktonic foraminiferal assemblages and artificial neural network estimates of sea-surface temperature (SST) at ODP Site 1123 (41°47.2'S, 171°29.9'W; 3290 m deep), east of New Zealand, reveal a high-resolution history of glacialinterglacial (GI) variability at the Subtropical Front ...
Middle Miocene (14.8–11.9 Ma) deep-sea sediments from ODP Hole 747A (Kerguelen Plateau, southern ... more Middle Miocene (14.8–11.9 Ma) deep-sea sediments from ODP Hole 747A (Kerguelen Plateau, southern Indian Ocean) contain abundant, well-preserved and diverse planktonic foraminiferal assemblages. A detailed study of the climatic and hydrographic changes that occurred in this region during the Middle Miocene Climatic Transition led to the identification of an intense cooling phase (the Middle Miocene Shift). Abundance fluctuations of planktonic foraminiferal
The first evolutionary appearance of Globigerinoides trilobus primordius (the Globigerinoides dat... more The first evolutionary appearance of Globigerinoides trilobus primordius (the Globigerinoides datum) has been taken to correspond closely with the base of the Aquitanian Stage at its stratotype, Saucats, south-western France. But elsewhere in Aquitaine basin (Escornebéou) the taxon occurs in strata with miogypsinids that are antecedent to those in the Aquitanian stratotype. Biometric comparison of G. trilobus primordius from these localities supports the miogypsinid data. The Escornebéou population is probably more primitive than those from Saucats: heights of apertures and of the spire are greater and chamber overlap is smaller. The test is less compact. As a precise criterion for the base of the Aquitanian Stage, as judged from the stratotype, the appearance of G. trilobus primordius is unreliable. Its first evolutionary appearance precedes this horizon.
Planktonic foraminiferal assemblages and artificial neural network estimates of sea-surface tempe... more Planktonic foraminiferal assemblages and artificial neural network estimates of sea-surface temperature (SST) at ODP Site 1123 (41°47.2'S, 171°29.9'W; 3290 m deep), east of New Zealand, reveal a high-resolution history of glacialinterglacial (GI) variability at the Subtropical Front ...
... 2000).Transfer functions or other methods, based on taxonomic census dataof benthic foraminif... more ... 2000).Transfer functions or other methods, based on taxonomic census dataof benthic foraminifera in one ... Most recent studies have focused on the use of marsh foramini-fera for estimating ... in basin analysis for estimating former water depths in normal salinity shelf, bathyal and ...
Planktonic foraminiferal assemblages and artificial neural network estimates of sea-surface tempe... more Planktonic foraminiferal assemblages and artificial neural network estimates of sea-surface temperature (SST) at ODP Site 1123 (41°47.2'S, 171°29.9'W; 3290 m deep), east of New Zealand, reveal a high-resolution history of glacialinterglacial (GI) variability at the Subtropical Front ...
Middle Miocene (14.8–11.9 Ma) deep-sea sediments from ODP Hole 747A (Kerguelen Plateau, southern ... more Middle Miocene (14.8–11.9 Ma) deep-sea sediments from ODP Hole 747A (Kerguelen Plateau, southern Indian Ocean) contain abundant, well-preserved and diverse planktonic foraminiferal assemblages. A detailed study of the climatic and hydrographic changes that occurred in this region during the Middle Miocene Climatic Transition led to the identification of an intense cooling phase (the Middle Miocene Shift). Abundance fluctuations of planktonic foraminiferal
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