Modern-Type Eolian Regime and Global Cooling-Modulated Dust Provenance in the Late Paleogene of Central-East Asia

doi:10.1029/2023GC011167

IVPP-IR

	Modern-Type Eolian Regime and Global Cooling-Modulated Dust Provenance in the Late Paleogene of Central-East Asia
	Bohm, K.1,2; Wasiljeff, J.1,3; Stevens, T.1,2; Salminen, J.1,3; Tang, H.1,4,5; Lahaye, Y.3; Kurhila, M.3; Zhang, Z.6,7,8; Haugvaldstad, O.5,9; Kaakinen, A.1
	2024-02-01
发表期刊	GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
卷号	25 期号:2 页码:23
通讯作者	Bohm, K.(katja.bohm@helsinki.fi)
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.
关键词	detrital zircon detrital rutile anisotropy of magnetic susceptibility Chinese Loess Plateau Siberian High Eocene-Oligocene transition
DOI	10.1029/2023GC011167
关键词[WOS]	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
收录类别	SCI
语种	英语
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
项目资助者	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
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:001157980400001
出版者	AMER GEOPHYSICAL UNION
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/23175
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 Helsinki, Dept Geosci & Geog, Helsinki, Finland 2.Uppsala Univ, Dept Earth Sci, Uppsala, Sweden 3.Geol Survey Finland, Espoo, Finland 4.Finnish Meteorol Inst, Climate Syst Res, Helsinki, Finland 5.Univ Oslo, Dept Geosci, Oslo, Norway 6.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origin, Beijing, Peoples R China 7.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China 8.Univ Chinese Acad Sci, Beijing, Peoples R China 9.Norwegian Meteorol Inst, Oslo, Norway
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.