气候变化领域集成服务门户(CCPortal): Gangdese retroarc thrust belt and foreland basin deposits in the Damxung area, southern Tibet

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DOI	10.1016/j.jseaes.2008.01.005
	Gangdese retroarc thrust belt and foreland basin deposits in the Damxung area, southern Tibet
	Pullen, Alex; Kapp, Paul; Gehrels, George E.; DeCelles, Peter G.; Brown, Edwin H.; Fabijanic, J. Matthew; Ding, Lin
通讯作者	Pullen, A (通讯作者)
发表日期	2008
ISSN	1367-9120
EISSN	1878-5786
起始页码	323
结束页码	336
卷号	33 期号:5-6
英文摘要	Geologic mapping and U-Pb detrital zircon geochronologic studies of (meta)sedimentary rocks in the Damxung area (similar to 90 kin north of Lhasa) of the southern Lhasa terrane in Tibet provide new insights into the history of deformation and clastic sedimentation prior to late Cenozoic extension. Cretaceous nonmarine elastic rocks similar to 10 kin southeast of Damxung are exposed as structural windows in the footwall of a thrust fault (the Damxung thrust) that carries Paleozoic strata in the hanging wall. To the north of Damxung in the southern part of the northern Nyainqentanglha Range (NNQTL), metaclastic rocks of previously inferred Paleozoic age are shown to range in depositional age from Late Cretaceous to Eocene. The metaclastic rocks regionally dip southward and are interpreted to have been structurally buried in the footwall of the Damxung thrust prior to being tectonized during late Cenozoic transtension. Along the northern flank of the NNQTL, Lower Eocene syncontractional redbeds were deposited in a triangle zone structural setting. All detrital zircon samples of Cretaceous-Eocene strata in the Damxung area include Early Cretaceous grains that were likely sourced from the Gangdese arc to the south. We suggest that the that newly recognized Late Cretaceous to Early Eocene (meta)clastic deposits and thrust faults represent the frontal and youngest part of a northward directed and propagating Gangdese retroarc thrust belt and foreland basin system that led to significant crustal thickening and elevation gain in southern Tibet prior to India-Asian collision. (C) 2008 Elsevier Ltd. All rights reserved.
关键词	TSANGPO SUTURE ZONE TECTONIC EVOLUTION LHASA BLOCK TERTIARY DEFORMATION SHEAR ZONE COLLISION ROCKS INDIA GEOTRAVERSE HIMALAYA
英文关键词	Tibet; Gangdese arc; Lhasa terrane; plateau formation; retroarc thrust belt
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000259419400003
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257577
推荐引用方式 GB/T 7714	Pullen, Alex,Kapp, Paul,Gehrels, George E.,et al. Gangdese retroarc thrust belt and foreland basin deposits in the Damxung area, southern Tibet[J]. 中国科学院青藏高原研究所,2008,33(5-6).
APA	Pullen, Alex.,Kapp, Paul.,Gehrels, George E..,DeCelles, Peter G..,Brown, Edwin H..,...&Ding, Lin.(2008).Gangdese retroarc thrust belt and foreland basin deposits in the Damxung area, southern Tibet.JOURNAL OF ASIAN EARTH SCIENCES,33(5-6).
MLA	Pullen, Alex,et al."Gangdese retroarc thrust belt and foreland basin deposits in the Damxung area, southern Tibet".JOURNAL OF ASIAN EARTH SCIENCES 33.5-6(2008).