干旱区生态环境知识资源中心(Arid): Aeolian dune accommodation space for Holocene Wadi Channel Avulsion Strata, Wahiba Dune Field, Oman

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DOI	10.1016/j.sedgeo.2020.105612
	Aeolian dune accommodation space for Holocene Wadi Channel Avulsion Strata, Wahiba Dune Field, Oman
	Kocurek, Gary 1; Westerman, Robin 2; Hern, Caroline 3; Tatum, Dominic 4; Rajapara, H. M.5; Singhvi, Ashok K.5
通讯作者	Kocurek, Gary
来源期刊	SEDIMENTARY GEOLOGY
ISSN	0037-0738
EISSN	1879-0968
出版年	2020
卷号	399
英文摘要	Geomorphic evolution of the Wahiba Dune Field, Oman, during the Quaternary has occurred within a set of boundary conditions that include climatic forcing of fluvial, aeolian and eustatic cycles within an active tectonic basin. Because of basin down-warping and sediment transport into the basin, evolution of the geomorphic surface has been accompanied by the generation of a distinctive stratigraphic record. The coupled geomorphic and stratigraphic record of the northeastern portion of the dune field illustrates wadi-aeolian interactions, in which a channel avulsion, likely initiated during a flood, scoured through the interdune corridor between linear dunes. Interdune outcrops (7 m thick) consist of a lower interval interpreted as deposited by ephemeral fluvial flow, but an upper interval consists of six fining-upward units, each of which is interpreted to represent a flood event that culminated in ponding followed by desiccation. Luminescence dating indicates that the channel remained open for 2- 3 ka during the Holocene, but ground-penetrating radar imaging shows that dunes encroached into the channel between floods and suggests that the transition from ephemeral flow to ponding resulted from dune damming. Maximum channel width and length are unknown, but width was greater than the current interdune area, and a speculative extended channel course is identified. Subsequently, interdune strata and linear dunes were buried by crescentic dunes sourced by an influx of sand with wadi affinity. The resultant complex stratigraphic architecture illustrates the role of existing surface topography in providing local geomorphic accommodation space for short-lived, concentrated patterns of sedimentation. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Wahiba Oman Interdune Fluvial aeolian interaction Holocene Accommodation space
类型	Article
语种	英语
国家	USA ; England ; Scotland ; India
收录类别	SCI-E
WOS记录号	WOS:000528207100003
WOS关键词	AL HAJAR MOUNTAINS ; ARABIAN SEA ; SAND SEA ; INDIAN MONSOON ; NORTHERN OMAN ; CONVERGENCE ZONE ; LATE PLEISTOCENE ; CLIMATE-CHANGE ; DESERT ; DEPOSITS
WOS类目	Geology
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315560
作者单位	1.Univ Texas Austin, Dept Geol Sci, 1 Univ Stn, Austin, TX 78962 USA; 2.29 St Davids Dr, Doncaster DN5 8PW, Yorks, England; 3.Shell Int Explorat & Prod, ISO N Dairy Ashford, Houston, TX 77079 USA; 4.Heriot Watt Univ, Inst GeoEnergy Engn, Edinburgh EH14 4AS, Midlothian, Scotland; 5.Phys Res Lab, Ahmadabad 380009, Gujarat, India
推荐引用方式 GB/T 7714	Kocurek, Gary,Westerman, Robin,Hern, Caroline,et al. Aeolian dune accommodation space for Holocene Wadi Channel Avulsion Strata, Wahiba Dune Field, Oman[J],2020,399.
APA	Kocurek, Gary,Westerman, Robin,Hern, Caroline,Tatum, Dominic,Rajapara, H. M.,&Singhvi, Ashok K..(2020).Aeolian dune accommodation space for Holocene Wadi Channel Avulsion Strata, Wahiba Dune Field, Oman.SEDIMENTARY GEOLOGY,399.
MLA	Kocurek, Gary,et al."Aeolian dune accommodation space for Holocene Wadi Channel Avulsion Strata, Wahiba Dune Field, Oman".SEDIMENTARY GEOLOGY 399(2020).