Difference between revisions of "RECENT PUBLICATIONS ON FORAMINIFERA"
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{{Recent Publications on Foraminifera Navigation}}<font size="2"> | {{Recent Publications on Foraminifera Navigation}}<font size="2"> | ||
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| + | ==BIOFACIES IN THE UPPER MIOCENE-LOWER PLIOCENE IN THE MANZANILLA BAY, NORTHEAST TRINIDAT== | ||
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| + | The Miocene–Pliocene Manzanilla Formation of northern Trinidad marks the arrival of the east-west flowing Orinoco River. Foraminifera were examined quantitatively in samples obtained at ∼5 m intervals from the lowest member of the formation, the San José Calcareous Silt Member, where exposed at eastern Manzanilla Bay and Point Noir. Recovery of ''Globorotalia merotumida'' indicates an age within the ''Globorotalia acostaensis'' Zone through Globorotalia margaritae evoluta Subzone, (N16–N19). Values of the information function (H) and the percentage of the total assemblage as planktonic foraminifera (%P), both traditionally used as palaeodepth indicators, were uncorrelated. ...... <br/> | ||
| + | Highlights | ||
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| + | • The San José Calcareous Silt Member was deposited under considerable freshwater influence. | ||
| + | • The abundance of ''Pseudononion atlanticum'' and ''Hanzawaia carstensi'' indicate shallow neritic palaeodepths. | ||
| + | • The water was occasionally clear enough for ''Amphistegina gibbosa''. | ||
| + | • ''Haplophragmoides wilberti'' indicate at least one intertidal interlude. | ||
| + | • The abundance of planktonic foraminifera and benthonic foraminiferal diversity are uncorrelated. | ||
| + | <font size="2">([http://www.sciencedirect.com/science/article/pii/S0895981113000813 ABSTRACT]) | ||
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| + | ----Wilson, B., 2013. [http://www.sciencedirect.com/science/article/pii/S0895981113000813 Foraminiferal biofacies in the San José Calcareous Silt Member (Manzanilla Formation, Upper Miocene to Lower Pliocene) in the Manzanilla Bay area, north-east Trinidad, and their environmental significance]. Journal of South American Earth Sciences 46, 80-88. | ||
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==EVALUATION OF ∂<sup>13</sup> STRATIGRAPHY AND BIOSTRATIGRAPHIC IMPLICATIONS FOR LATE CRETACEOUS GLOBAL CORRELATION== | ==EVALUATION OF ∂<sup>13</sup> STRATIGRAPHY AND BIOSTRATIGRAPHIC IMPLICATIONS FOR LATE CRETACEOUS GLOBAL CORRELATION== | ||
