(Table S2) Age determination of ODP Sites 202-1234 and 202-1235 ...

• Main Authors: Muratli, Jesse M, Chase, Zanna, Mix, Alan C, McManus, James
• Format: Dataset
• Language: English
• Published: PANGAEA - Publishing Network for Geoscientific and Environmental Data 2010
• Subjects: Antarc*; Antarctic
• Online Access: https://dx.doi.org/10.15468/z24kjf; https://www.gbif.org/dataset/6f4a4bb2-4c3c-4f52-8acf-fa8f44b30ada

Antarctic Intermediate Water is, at present, a water mass that brings oxygen to intermediate depths throughout the Southern Hemisphere oceans. Models have suggested that intermediate waters had higher concentrations of oxygen during the last glacial period (Meissner et al., 2005, doi:10.1029/2004PA001083; Liu et al., 2002, doi:10.1029/2001GL013938), consistent with globally reduced denitrification (Galbraith et al., doi:10.1029/2003PA001000) and increased production of Antarctic Intermediate Water (Lynch-Stieglitz and Fairbanks, 1994, doi:10.1029/93PA02446). However, some palaeoceanographic reconstructions (Bostock et al., 2004, doi:10.1029/2004PA001047; Pahnke and Zahn, 2005, doi:10.1126/science.1102163) have indicated that production decreased in the southeast Pacific Ocean at this time. Here we analyse the concentrations of Re and Mn, the sedimentary concentrations of which are controlled by the amount of dissolved oxygen at the sea floor, from three sediment cores located along the Chilean margin for the ...