干旱区生态环境知识资源中心(Arid): The role of eolian-fluvial interactions and dune dams in landscape change, late Pleistocene-Holocene, Mojave Desert, USA

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DOI	10.1130/B35434.1
	The role of eolian-fluvial interactions and dune dams in landscape change, late Pleistocene-Holocene, Mojave Desert, USA
	Sweeney, Mark R.; McDonald, Eric, V; Chabela, Lucas P.; Hanson, Paul R.
通讯作者	Sweeney, MR
来源期刊	GEOLOGICAL SOCIETY OF AMERICA BULLETIN
ISSN	0016-7606
EISSN	1943-2674
出版年	2020
卷号	132 期号:11-12 页码:2318-2332
英文摘要	The formation of the Kelso Dunes in the eastern Mojave Desert, California, was a landscape-changing event triggered by an increase in sediment supply that followed the incision of Afton Canyon by the Mojave River ca. 25 ka. Eastward migration of sand dunes occurred along a well-defined eolian transport corridor. Dunes temporarily blocked washes resulting in substantial aggradation of eolian and fluvial sediments. Stratigraphic exposures reveal numerous fining-up sequences with interbedded eolian sands that provide evidence of dune dams and subsequent aggradation. Luminescence ages reveal that dune blocking and aggradation correspond to a regional pulse of alluvial fan sedimentation that occurred ca. 14-9 ka. Meanwhile, relative landscape stability occurred downstream of dune dams, resulting in the formation of a moderately developed soil on abandoned fluvial deposits. The next pulse of alluvial fan activity ca. 6-3 ka likely resulted in the breaching of the dune dams, followed by incision. Eolian system sediment state theory suggests that eolian activity in the Mojave Desert is closely tied to enhanced sediment supply, primarily related to the Mojave River-Lake Mojave system. Our data suggests that Intermittent Lake Mojave I, ca. 26-22 ka, triggered a large dune-building event that impounded massive amounts of sediment derived from alluvial fans deposited during the Pleistocene-Holocene transition. Breaching of dune dams and sediment recycling may have also increased sediment supply that contributed to late Holocene eolian activity. This profound impact on the regional geomorphology highlights the critical importance of eolian-fluvial interactions in desert environments.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000588959000006
WOS关键词	KELSO DUNES ; CLIMATE-CHANGE ; NEGEV DESERT ; AFTON CANYON ; RIVER-BASIN ; LAKE MANIX ; SAND DUNES ; LUMINESCENCE ; DEPOSITS ; CALIFORNIA
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
来源机构	Desert Research Institute
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327476
作者单位	[Sweeney, Mark R.] Univ South Dakota, Dept Sustainabil & Environm, Vermillion, SD 57069 USA; [McDonald, Eric, V] Desert Res Inst, Div Earth & Ecosyst Sci, Reno, NV 89512 USA; [Chabela, Lucas P.] Terracon Consultants Inc, Franklin, WI 53132 USA; [Hanson, Paul R.] Univ Nebraska, Sch Nat Resources, Lincoln, NE 68583 USA
推荐引用方式 GB/T 7714	Sweeney, Mark R.,McDonald, Eric, V,Chabela, Lucas P.,et al. The role of eolian-fluvial interactions and dune dams in landscape change, late Pleistocene-Holocene, Mojave Desert, USA[J]. Desert Research Institute,2020,132(11-12):2318-2332.
APA	Sweeney, Mark R.,McDonald, Eric, V,Chabela, Lucas P.,&Hanson, Paul R..(2020).The role of eolian-fluvial interactions and dune dams in landscape change, late Pleistocene-Holocene, Mojave Desert, USA.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,132(11-12),2318-2332.
MLA	Sweeney, Mark R.,et al."The role of eolian-fluvial interactions and dune dams in landscape change, late Pleistocene-Holocene, Mojave Desert, USA".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 132.11-12(2020):2318-2332.