Shell weights from intermediate depths in the Caribbean Sea

Publication Status is "Submitted" Or "In Press: 
LDEO Publication: 
Publication Type: 
Year of Publication: 
2003
Editor: 
Journal Title: 
Geochemistry Geophysics Geosystems
Journal Date: 
Jul 15
Place Published: 
Tertiary Title: 
Volume: 
4
Issue: 
Pages: 
-
Section / Start page: 
Publisher: 
ISBN Number: 
1525-2027
ISSN Number: 
Edition: 
Short Title: 
Accession Number: 
ISI:000184598200004
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Call Number: 
Abstract: 

[1] Whole foraminifera shell weights for G. sacculifer and N. dutertrei in Caribbean Sea cores covering a depth range of 680 to 3620 m show a decrease in weight of 3.6 +/- 0.4 mug between glacial time and the Holocene. This difference likely reflects a thickening of foraminifera shells as a result of the higher carbonate ion concentration of glacial surface water. The fact that the shells from the core at 680 m depth are considerably lighter than those from the core at 1030 m depth suggests either that there is an up-water column increase in the offset between the pore water and the bottom water carbonate ion concentration or that factors other than surface water carbonate ion concentration influence the initial shell weight. Of particular interest is a strong preservation event corresponding to the deglacial interval at 680 m depth ( the present-day core of the intermediate water mass).

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708YPTimes Cited:1Cited References Count:10

DOI: 
Doi 10.1029/2002gc000491