Modern-Type Eolian Regime and Global Cooling-Modulated Dust Provenance in the Late Paleogene of Central-East Asia
文献类型：期刊论文
| 作者 | Bohm, K.8,9; Wasiljeff, J.7,9; Stevens, T.8,9; Salminen, J.7,9; Tang, H.1,6,9; Lahaye, Y.7; Kurhila, M.7; Zhang, Z.3,4,5; Haugvaldstad, O.1,2; Kaakinen, A.9 |
| 刊名 | GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
 |
| 出版日期 | 2024-02-01 |
| 卷号 | 25期号:2页码:23 |
| 关键词 | detrital zircon detrital rutile anisotropy of magnetic susceptibility Chinese Loess Plateau Siberian High Eocene-Oligocene transition |
| DOI | 10.1029/2023GC011167 |
| 通讯作者 | Bohm, K.(katja.bohm@helsinki.fi) |
| 英文摘要 | Atmospheric mineral dust is a poorly constrained yet extremely important component of the climate system. Provenance studies from geologic dust archives are crucial to understand the drivers of the dust cycle over long time scales. Our multi-technique provenance analysis of a rare Paleogene (35-27 Ma) eolian dust sequence from Ulantatal, similar to 400 km northwest of the Chinese Loess Plateau (CLP), shows that Paleogene dust transporting winds generally varied between northwesterly and westerly, the same as those in the late Neogene-Quaternary bipolar icehouse. We propose that, as today, westerly wind circulation patterns would have been modulated by an Arctic Oscillation (AO)-like situation, and that the warm Eocene favored a long-term negative phase of AO, leading to meridional westerly circulation and the dominance of a northwesterly dust transport pathway. After the Eocene-Oligocene transition (EOT), long-term positive phase of AO-like conditions initiated, leading to stronger and more zonal westerlies. The Siberian High (SH) also formed or strengthened at the EOT and started to control dust storm activity along the northwesterly transport pathway. We argue that increased Paleogene Northern Hemisphere (NH) ice volume was the ultimate driver of this modern-type dust transport regime in the Ulantatal region, possibly also controlling initial Ulantatal dust sequence formation via the development of the SH and modern-type eolian regime. The similarity between the Ulantatal and late Neogene northern CLP dust provenance signals suggests that the increased NH ice volume, via its control on the northwesterly dust transport, could have promoted increased loess formation also in the late Miocene. |
| WOS关键词 | CHINESE LOESS PLATEAU ; NATURAL REFERENCE MATERIAL ; NORTHERN TIBETAN PLATEAU ; RED CLAY DEPOSITS ; U-PB AGE ; MAGNETIC-SUSCEPTIBILITY ; WINTER MONSOON ; CALCITE COMPENSATION ; ARCTIC OSCILLATION ; BIPOLAR GLACIATION |
| 资助项目 | Magnus Ehrnroothin Sti ; Magnus Ehrnrooth foundation[288277] ; Magnus Ehrnrooth foundation[337552] ; Research Council of Finland[2017-03888] ; Swedish Research Council[CH2020-8688] ; Swedish Research Council[42111530183] ; STINT-NSFC mobility grants[226214] ; Research Council of Norway ; Centre for Earth Evolution and Dynamics, University of Oslo[XDB26000000] ; Strategic Research Program of Chinese Academy of Sciences |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | AMER GEOPHYSICAL UNION |
| WOS记录号 | WOS:001157980400001 |
| 资助机构 | Magnus Ehrnroothin Sti ; Magnus Ehrnrooth foundation ; Research Council of Finland ; Swedish Research Council ; STINT-NSFC mobility grants ; Research Council of Norway ; Centre for Earth Evolution and Dynamics, University of Oslo ; Strategic Research Program of Chinese Academy of Sciences |
| 源URL | [http://119.78.100.205/handle/311034/23174]  |
| 专题 | 中国科学院古脊椎动物与古人类研究所 |
| 通讯作者 | Bohm, K. |
| 作者单位 | 1.Univ Oslo, Dept Geosci, Oslo, Norway 2.Norwegian Meteorol Inst, Oslo, Norway 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origin, Beijing, Peoples R China 6.Finnish Meteorol Inst, Climate Syst Res, Helsinki, Finland 7.Geol Survey Finland, Espoo, Finland 8.Uppsala Univ, Dept Earth Sci, Uppsala, Sweden 9.Univ Helsinki, Dept Geosci & Geog, Helsinki, Finland |
| 推荐引用方式 GB/T 7714 | Bohm, K.,Wasiljeff, J.,Stevens, T.,et al. Modern-Type Eolian Regime and Global Cooling-Modulated Dust Provenance in the Late Paleogene of Central-East Asia[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2024,25(2):23. |
| APA | Bohm, K..,Wasiljeff, J..,Stevens, T..,Salminen, J..,Tang, H..,...&Kaakinen, A..(2024).Modern-Type Eolian Regime and Global Cooling-Modulated Dust Provenance in the Late Paleogene of Central-East Asia.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,25(2),23. |
| MLA | Bohm, K.,et al."Modern-Type Eolian Regime and Global Cooling-Modulated Dust Provenance in the Late Paleogene of Central-East Asia".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 25.2(2024):23. |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
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