作者
Carys P Cook, Tina Van De Flierdt, Trevor Williams, Sidney R Hemming, Masao Iwai, Munemasa Kobayashi, Francisco J Jimenez-Espejo, Carlota Escutia, Jhon Jairo González, Boo-Keun Khim, Robert M McKay, Sandra Passchier, Steven M Bohaty, Christina R Riesselman, Lisa Tauxe, Saiko Sugisaki, Alberto Lopez Galindo, Molly O Patterson, Francesca Sangiorgi, Elizabeth L Pierce, Henk Brinkhuis, Adam Klaus, Annick Fehr, James AP Bendle, Peter K Bijl, Stephanie A Carr, Robert B Dunbar, José Abel Flores, Travis G Hayden, Kota Katsuki, Gee Soo Kong, Mutsumi Nakai, Matthew P Olney, Stephen F Pekar, Jörg Pross, Ursula Röhl, Toyosaburo Sakai, Prakash K Shrivastava, Catherine E Stickley, Shouting Tuo, Kevin Welsh, Masako Yamane
发表日期
2013/9
期刊
Nature Geoscience
卷号
6
期号
9
页码范围
765-769
出版商
Nature Publishing Group UK
简介
Warm intervals within the Pliocene epoch (5.33–2.58 million years ago) were characterized by global temperatures comparable to those predicted for the end of this century and atmospheric CO2 concentrations similar to today,,. Estimates for global sea level highstands during these times imply possible retreat of the East Antarctic ice sheet, but ice-proximal evidence from the Antarctic margin is scarce. Here we present new data from Pliocene marine sediments recovered offshore of Adélie Land, East Antarctica, that reveal dynamic behaviour of the East Antarctic ice sheet in the vicinity of the low-lying Wilkes Subglacial Basin during times of past climatic warmth. Sedimentary sequences deposited between 5.3 and 3.3 million years ago indicate increases in Southern Ocean surface water productivity, associated with elevated circum-Antarctic temperatures. The geochemical provenance of detrital material deposited …
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CP Cook, T Van De Flierdt, T Williams, SR Hemming… - Nature Geoscience, 2013