气候变化领域集成服务门户(CCPortal): Oligocene-Miocene Great Lakes in the India-Asia Collision Zone

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DOI	10.1111/bre.12217
	Oligocene-Miocene Great Lakes in the India-Asia Collision Zone
	DeCelles, Peter G.; Castaneda, Isla S.; Carrapa, Barbara; Liu, Juan; Quade, Jay; Leary, Ryan; Zhang, Liyun
通讯作者	DeCelles, PG (通讯作者)
发表日期	2018
ISSN	0950-091X
EISSN	1365-2117
起始页码	228
结束页码	247
卷号	30
英文摘要	The Himalayan-Tibetan Plateau is Earth's highest topographic feature, and formed largely during Cenozoic time as India collided with and subducted beneath southern Asia. The >1300km long, late Oligocene-early Miocene Kailas basin formed within the collisional suture zone more than 35Ma after the onset of collision, and provides a detailed picture of surface environments, processes and possible geodynamic mechanisms operating within the suture zone during the ongoing convergence of India and Asia. We present new geochronological, sedimentological, organic geochemical and palaeontological data from a previously undocumented 400km long portion of the Kailas basin. The new data demonstrate that this part of the basin was partly occupied by large, deep, probably meromictic lakes surrounded by coal-forming swamps. Lacustrine facies include coarse- and fine-grained turbidites, profundal black shales and marginal Gilbert-type deltas. Organic geochemical temperature proxies suggest that palaeolake water was warmer than 25 degrees C, and cyprinid fish fossils indicate an ecology capable of supporting large fish. Our findings demonstrate a brief period of low elevation in the suture zone during Oligocene-Miocene time (26-21Ma) and call for a geodynamic mechanism capable of producing a long (>1000km) and narrow basin along the southern edge of the upper, Asian plate, long after the onset of intercontinental collision. Kailas basin deposits presently are exposed at elevations >6000m, requiring dramatic elevation gain in the region after Kailas deposition, without strongly shortening the upper crust. Episodic Indian slab rollback, followed by break-off and subsequent renewal of flat-slab subduction, can account for features of the Kailas basin.
关键词	DIALKYL GLYCEROL TETRAETHERS SOUTHERN TIBET TECTONIC EVOLUTION MEMBRANE-LIPIDS SUTURE ZONE ENVIRONMENTAL CONTROLS STRUCTURAL EVOLUTION LADAKH HIMALAYA STABLE-ISOTOPES SOUTHWEST TIBET
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000419873300013
来源期刊	BASIN RESEARCH
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/259298
推荐引用方式 GB/T 7714	DeCelles, Peter G.,Castaneda, Isla S.,Carrapa, Barbara,et al. Oligocene-Miocene Great Lakes in the India-Asia Collision Zone[J]. 中国科学院青藏高原研究所,2018,30.
APA	DeCelles, Peter G..,Castaneda, Isla S..,Carrapa, Barbara.,Liu, Juan.,Quade, Jay.,...&Zhang, Liyun.(2018).Oligocene-Miocene Great Lakes in the India-Asia Collision Zone.BASIN RESEARCH,30.
MLA	DeCelles, Peter G.,et al."Oligocene-Miocene Great Lakes in the India-Asia Collision Zone".BASIN RESEARCH 30(2018).