Ice-volume-forced erosion of the Chinese Loess Plateau global Quaternary stratotype site.
Ice-volume-forced erosion of the Chinese Loess Plateau global Quaternary stratotype site.
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DOI:
10.1038/s41467-018-03329-2
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发表时间:
2018-03-07
影响因子:
16.6
通讯作者:
Lu H
中科院分区:
文献类型:
--
作者:
Stevens T;Buylaert JP;Thiel C;Újvári G;Yi S;Murray AS;Frechen M;Lu H
The International Commission on Stratigraphy (ICS) utilises benchmark chronostratigraphies to divide geologic time. The reliability of these records is fundamental to understand past global change. Here we use the most detailed luminescence dating age model yet published to show that the ICS chronology for the Quaternary terrestrial type section at Jingbian, desert marginal Chinese Loess Plateau, is inaccurate. There are large hiatuses and depositional changes expressed across a dynamic gully landform at the site, which demonstrates rapid environmental shifts at the East Asian desert margin. We propose a new independent age model and reconstruct monsoon climate and desert expansion/contraction for the last ~250 ka. Our record demonstrates the dominant influence of ice volume on desert expansion, dust dynamics and sediment preservation, and further shows that East Asian Summer Monsoon (EASM) variation closely matches that of ice volume, but lags insolation by ~5 ka. These observations show that the EASM at the monsoon margin does not respond directly to precessional forcing. A basic requirement for reconstructing past environmental change is accurate understanding of sediment age. Here, the authors show that the interpretation of a benchmark archive in China has been inaccurate, and that ice volume primarily controls desert dynamics, sediment preservation, and precipitation at the site.
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影响因子:
64.8
作者:
Hao, Qingzhen;Wang, Luo;Guo, Zhengtang
通讯作者:
Guo, Zhengtang
影响因子:
2.7
作者:
Buylaert, J. P.;Vandenberghe, D.;Van den Haute, P.
通讯作者:
Van den Haute, P.
影响因子:
2.7
作者:
Buylaert, J. P.;Murray, A. S.;Van den haute, P.
通讯作者:
Van den haute, P.
影响因子:
2
作者:
Duller, GAT
通讯作者:
Duller, GAT
影响因子:
2
作者:
Colarossi, D.;Duller, G. A. T.;Roberts, H. M.
通讯作者:
Roberts, H. M.