Cd and δ¹³C reconstruction for the LGM and Holocene in Brazil Margin sediment cores, supplement to: Makou, Mathhew C; Oppo, Delia W; Curry, William B (2010): South Atlantic intermediate water mass geometry for the last glacial maximum from foraminiferal Cd/Ca. Paleoceanography, 25(4), PA4101

Paleoceanographic studies using benthic foraminiferal Cd as a nutrient tracer have provided a robust means of reconstructing glacial Atlantic Ocean water mass geometry, but a paucity of data from the South Atlantic above 1200 m has limited investigation of Antarctic Intermediate Water (AAIW) configu...

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Bibliographic Details
Main Authors: Makou, Mathhew C, Oppo, Delia W, Curry, William B
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA - Data Publisher for Earth & Environmental Science 2010
Subjects:
Antarctic
Antarc*
Online Access:https://dx.doi.org/10.1594/pangaea.831228
https://doi.pangaea.de/10.1594/PANGAEA.831228
Description
Summary:Paleoceanographic studies using benthic foraminiferal Cd as a nutrient tracer have provided a robust means of reconstructing glacial Atlantic Ocean water mass geometry, but a paucity of data from the South Atlantic above 1200 m has limited investigation of Antarctic Intermediate Water (AAIW) configuration and formation. A new Cd depth profile from Brazil margin sediments suggests that AAIW penetrated northward at 1100 m to at least 27°S in the glacial Atlantic. It exhibited substantially reduced d13Cas values, confirming preliminary evidence that this AAIW was unique to the glacial Atlantic and that it formed differently than today, with less atmospheric contact.

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