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Deep-sea ostracode shell chemistry (Mg:Ca ratios) and late Quaternary Arctic Ocean history

Late Quaternary palaeoceanography of the North Atlantic margins

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, , , ,
Edited by:
Andrews J.T.et al

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Abstract

The magnesium:calcium (Mg:Ca) and strontium:calcium (Sr:Ca) ratios were investigated in shells of the benthic ostracode genus Krithe obtained from 64 core-tops from water depths of 73 to 4411 m in the Arctic Ocean and Nordic seas to determine the potential of ostracode shell chemistry for paleoceanographic study. Shells from the abyssal plain and ridges of the Nansen, Amundsen and Makarov basins and the Norwegian and Greenland seas had a wide scatter of Mg:Ca ratios ranging from 0.007 to 0.012 that may signify post-mortem chemical alteration of the shells from Arctic deep-sea environments below about 1000 m water depth. There is a positive correlation (r2=0.59) between Mg:Ca ratios and bottom-water temperature in Krithe shells from water depths <900 m.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Deep-sea ostracode shell chemistry (Mg:Ca ratios) and late Quaternary Arctic Ocean history
Series title:
Late Quaternary palaeoceanography of the North Atlantic margins
Year Published:
1996
Language:
English
Publisher:
Geological Society
Publisher location:
London; Special Publication, 111
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Late Quaternary palaeoceanography of the North Atlantic margins
First page:
117
Last page:
134
Number of Pages:
18