New data on the trace metal composition of the planktonic foraminifera microfossils of the Atlantic Ocean

This paper reports new data on the trace metal composition of planktonic foraminifer shells from surface sediments and cores (fraction >0.1 mm) in the central part of the Atlantic Ocean. This investigation has made it possible to identify a considerable accumulation of trace elements from water d...

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Bibliographic Details
Published in:Doklady earth sciences 2016-11, Vol.471 (1), p.1193-1198
Main Authors: Demina, L. L., Oskina, N. S.
Format: Article
Language:English
Subjects:
Calcite
Cores
Earth and Environmental Science
Earth Sciences
Fossils
Geological time
Holocene
Metals
Mineralization
Oceanography
Oceanology
Plankton
Pleistocene
Trace elements
Trace metals
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Summary:This paper reports new data on the trace metal composition of planktonic foraminifer shells from surface sediments and cores (fraction >0.1 mm) in the central part of the Atlantic Ocean. This investigation has made it possible to identify a considerable accumulation of trace elements from water due to calcite entering into the crystal lattice under biomineralization and adsorption on the shell surface and pores, despite the fact that the shells are depleted in trace elements relative to pelagic clays. The trace element content in planktonic foraminifer microfossils is characterized by temporal variability, which is the most pronounced in long cores (Holocene–Upper Pleistocene) and reflects the sedimentation paleoenvironment in the ocean.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X1611012X