干旱区生态环境知识资源中心(Arid): Identifying eolian dust in the geological record

Arid

DOI	10.1016/j.earscirev.2020.103410
	Identifying eolian dust in the geological record
	Meijer, Niels; Dupont-Nivet, Guillaume; Licht, Alexis; Trabucho-Alexandr, Joao; Bourquin, Sylvie; Abels, Hemmo A.
通讯作者	Meijer, N (corresponding author), Univ Potsdam, Inst Geosci, D-14476 Potsdam, Germany.
来源期刊	EARTH-SCIENCE REVIEWS
ISSN	0012-8252
EISSN	1872-6828
出版年	2020
卷号	211
英文摘要	Recognition of terrestrial dust in geological records is essential for reconstructing paleoenvironments and quantifying dust fluxes in the past. However, in contrast to eolian sands, silt-sized dust is difficult to recognize in pre-Quaternary records due to a lack of macroscopic features indicating eolian transport and mixing with alluvial sediments. Windblown dust deposits are commonly identified by comparing their sedimentological and petrological features with Quaternary examples of dust known as loess. Here, we review the characteristics of terrestrial dust deposits and conclude that most of these features are not exclusively windblown and may be formed by alluvial deposits as well. We therefore synthesize a set of criteria which enable a reliable identification and quantification of dust while acknowledging potential contributions of alluvial components. These methods include quartz-grain surface morphology analysis to distinguish eolian and alluvial transport modes, provenance studies to identify local and extrabasinal sources, grain-size-shape end-member modelling to quantify the various sedimentary contributions to the record, and a basin-scale stratigraphic approach to derive regional patterns and avoid interpretation of local phenomena. We reassess the Eocene to Pliocene records of the Chinese Loess Plateau and conclude that these strata represent both alluvial and eolian sediments deposited in extensive mudflat systems. Quaternary loess, by contrast, is almost exclusively composed of windblown dust. The early Pleistocene shift from mudflat to loess deposits is associated with a significant increase in accumulation rates, likely due to increased dust production upwind, overwhelming and blanketing the local mudflat systems in central China.
英文关键词	Mineral dust Loess Loessite
类型	Article
语种	英语
开放获取类型	Green Published
收录类别	SCI-E
WOS记录号	WOS:000599840200003
WOS关键词	CHINESE LOESS PLATEAU ; GRAIN-SIZE DISTRIBUTION ; PLIOCENE RED CLAY ; ASIAN WINTER MONSOON ; WIND-BLOWN ORIGIN ; PAST 8 MA ; TIBETAN PLATEAU ; DESERT LOESS ; PALEOCLIMATIC SIGNIFICANCE ; ATMOSPHERIC CIRCULATION
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
来源机构	北京大学 ; E17
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348811
作者单位	[Meijer, Niels; Dupont-Nivet, Guillaume] Univ Potsdam, Inst Geosci, D-14476 Potsdam, Germany; [Dupont-Nivet, Guillaume; Bourquin, Sylvie] Univ Rennes, CNRS, Geosci Rennes, UMR 6118, F-35000 Rennes, France; [Dupont-Nivet, Guillaume] Peking Univ, Sch Earth & Space Sci, Minist Educ, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China; [Licht, Alexis] Univ Washington, Dept Earth & Space Sci, Seattle, WA 98195 USA; [Trabucho-Alexandr, Joao] Univ Utrecht, Dept Earth Sci, POB 80115, NL-3508 TC Utrecht, Netherlands; [Abels, Hemmo A.] Delft Univ Technol, Dept Geosci & Engn, NL-2628 CN Delft, Netherlands
推荐引用方式 GB/T 7714	Meijer, Niels,Dupont-Nivet, Guillaume,Licht, Alexis,et al. Identifying eolian dust in the geological record[J]. 北京大学, E17,2020,211.
APA	Meijer, Niels,Dupont-Nivet, Guillaume,Licht, Alexis,Trabucho-Alexandr, Joao,Bourquin, Sylvie,&Abels, Hemmo A..(2020).Identifying eolian dust in the geological record.EARTH-SCIENCE REVIEWS,211.
MLA	Meijer, Niels,et al."Identifying eolian dust in the geological record".EARTH-SCIENCE REVIEWS 211(2020).