Paired benthic foraminiferal Cd/Ca and Zn/Ca evidence for a greatly increased presence of Southern Ocean water in the glacial North Atlantic

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doi: 10.1029/2000PA000598
Author(s): Marchitto, Thomas M., Jr.; Oppo, Delia W.; Curry, William B.
Author Affiliation(s): Primary:
Lamont-Doherty Earth Observatory, Palisades, NY, United States
Woods Hole Oceanographic Institution, United States
Volume Title: Paleoceanography
Source: Paleoceanography, 17(3), 16p. Publisher: American Geophysical Union, Washington, DC, United States. ISSN: 0883-8305 CODEN: POCGEP
Note: In English. 72 refs.; illus., incl. 3 tables
Summary: Benthic foraminiferal studies suggest that deep Atlantic circulation during the Last Glacial Maximum was different from today. High-nutrient deep Southern Ocean Water penetrating far into the North Atlantic. Cibicidoides wuellerstorfi Cd/Ca results presented in this paper indicate that the glacial North Atlantic was enriched in dissolved Cd. NADW. High glacial Zn/Ca values in the same samples, are best explained by a substantially increased mixing with Zn-rich SOW. The cause was most likely a partial replacement of NADW by less dense Glacial North Atlantic Intermediate Water. (modified journ. abst.)
Year of Publication: 2002
Research Program: ODP Ocean Drilling Program
Key Words: 07 Marine Geology and Oceanography; Alkaline earth metals; Anomalinidae; Antarctic Ocean; Atlantic Ocean; Bathymetry; Benthic taxa; C-13/C-12; Cadmium; Calcium; Carbon; Cassidulinacea; Cenozoic; Cibicidoides; Cibicidoides wuellerstorfi; Enrichment; Foraminifera; Geochemistry; Glacial circulation models; Holocene; Invertebrata; Isotope ratios; Isotopes; Last glacial maximum; Leg 162; Metals; Microfossils; North Atlantic; Ocean Drilling Program; Ocean circulation; Paleoclimatology; Protista; Quaternary; Rotaliina; Sea water; Stable isotopes; Upper Holocene
Coordinates: N552838 N772026 W0062700 W0240457
Record ID: 2003029499
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