干旱区生态环境知识资源中心(Arid): Geochemistry of aeolian material from the McMurdo Dry Valleys, Antarctica: Insights into Southern Hemisphere dust sources

Arid

DOI	10.1016/j.epsl.2020.116460
	Geochemistry of aeolian material from the McMurdo Dry Valleys, Antarctica: Insights into Southern Hemisphere dust sources
	Diaz, Melisa A.; Welch, Susan A.; Sheets, Julie M.; Welch, Kathleen A.; Khan, Alial.; Adams, ByronJ.; McKnight, DianeM.; Cary, S. Craig; Lyons, W. Berry
通讯作者	Diaz, MA
来源期刊	EARTH AND PLANETARY SCIENCE LETTERS
ISSN	0012-821X
EISSN	1385-013X
出版年	2020
卷号	547
英文摘要	In the Southern Hemisphere, the major sources of dust and other aeolian materials are from Patagonia, South Africa, Australia, and New Zealand. Dust from Patagonia and New Zealand has been identified in ice cores throughout Antarctica, suggesting that during arid and windy periods, such as glacial periods, dust can be entrained and transported onto the continent. However, little information exists on modern Antarctic dust sources, transport, and its role in the Southern Hemisphere dust cycle. We present the first geochemical characterization of aeolian materials collected at five heights (between 5 cm and 100 cm) above the surface in four valleys within the McMurdo Dry Valleys, the largest ice-free area in Antarctica. Our mineralogy data indicate that these materials are primarily derived from local rocks of the McMurdo Volcanics, Ferrar Dolerite, Beacon Sandstone and Granite Harbor Intrusives, with varying contributions of each rock type dependent on the valley location. While major oxide, trace element and rare earth element data show that low elevation and coastal locations (with respect to the Ross Sea) are dominated by local sources, high elevation and inland locations have accumulated both local materials and dust from other distant Southern Hemisphere sources. This far-traveled material may not be accumulating today, but represents a paleo source that is resuspended from the soils. By geochemically fingerprinting aeolian materials from the MDV, we can better inform future studies on the transport of materials within Antarctica and between Southern Hemisphere land masses. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Antarctica aeolian material mineralogy major oxides trace elements rare earth elements
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000557762500014
WOS关键词	RARE-EARTH-ELEMENTS ; EAST ANTARCTICA ; VICTORIA LAND ; TAYLOR VALLEY ; TALOS DOME ; TRANSANTARCTIC MOUNTAINS ; ICE-SHEET ; ROSS SEA ; TRANSPORT ; PROVENANCE
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325528
作者单位	[Diaz, Melisa A.; Welch, Susan A.; Sheets, Julie M.; Lyons, W. Berry] Ohio State Univ, Sch Earth Sci, Columbus, OH 43210 USA; [Diaz, Melisa A.; Welch, Susan A.; Welch, Kathleen A.; Lyons, W. Berry] Ohio State Univ, Byrd Polar & Climate Res Ctr, Columbus, OH 43210 USA; [Welch, Kathleen A.; Khan, Alial.; McKnight, DianeM.] Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA; [Khan, Alial.] Western Washington Univ, Dept Environm Sci, Bellingham, WA 98225 USA; [Adams, ByronJ.] Brigham Young Univ, Dept Biol, Evolutionary Ecol Labs, Provo, UT 84602 USA; [Adams, ByronJ.] Brigham Young Univ, Monte L Bean Museum, Provo, UT 84602 USA; [McKnight, DianeM.] Univ Colorado, Dept Civil & Environm Engn, Boulder, CO 80309 USA; [Cary, S. Craig] Univ Waikato, Biol Sci, Hamilton, New Zealand
推荐引用方式 GB/T 7714	Diaz, Melisa A.,Welch, Susan A.,Sheets, Julie M.,et al. Geochemistry of aeolian material from the McMurdo Dry Valleys, Antarctica: Insights into Southern Hemisphere dust sources[J],2020,547.
APA	Diaz, Melisa A..,Welch, Susan A..,Sheets, Julie M..,Welch, Kathleen A..,Khan, Alial..,...&Lyons, W. Berry.(2020).Geochemistry of aeolian material from the McMurdo Dry Valleys, Antarctica: Insights into Southern Hemisphere dust sources.EARTH AND PLANETARY SCIENCE LETTERS,547.
MLA	Diaz, Melisa A.,et al."Geochemistry of aeolian material from the McMurdo Dry Valleys, Antarctica: Insights into Southern Hemisphere dust sources".EARTH AND PLANETARY SCIENCE LETTERS 547(2020).