Tectonic unconformities and their forming: Implication for hydrocarbon accumulations in Tarim basin

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	Tectonic unconformities and their forming: Implication for hydrocarbon accumulations in Tarim basin
	He, BZ (He BiZhu); Xu, ZQ (Xu ZhiQin); Rao, CL (Rao CunLi); Li, HB (Li HaiBing); Cai, ZH (Cai ZhiHui)
刊名	ACTA PETROLOGICA SINICA
	2011
卷号	27 期号:1 页码:253-265
关键词	Tectonic unconformity sequence Tectonic unconformity configuration Formation Hydrocarbon accumulations Tarim basin
ISSN号	1000-0569
英文摘要	Utilized regional seismic profiles and well drilled data, we research the structure, original denudation direction, included angle between angle unconfortnity and underlying beds, and distribution of the 6 major tectonic unconformities in Tarim basin. We analyses tectonic unconformities formation responded to tecto-orogenic process peripheral mountains of basin. Middle Caledonian, the unconformity I (T(7)(0) , S/O(3)) in Tarim basin denuded mainly from south to north, and extended to the south margin of Awati-Manjiaer depression. Hetian and Tazhong paleo-uplift formed responsible to the northern of West Kunlun and Altyn-Qilian collision orogen belts occurred. Later Caledonian, the unconformity II (T(6)(0) (D(3)d + C)/D(1-2)) formed angular unconformity with southward and northward erosion mainly, and constructed peripheral uplift of Tarim basin, erosion intensity and denudation extent of Tabei uplift is greater than Katak uplift. Tarim basin lied in compressive tectonic regime from north and south, and then northeast. Hercynian, the unconformity III (T(5)(0), T/P) denuded from northeast to southeast, occurred two erosion terraces by compressed from northeast and north to southwest, Yingmaili high at western of Tabei uplift presented the most intense. Indosinian, the unconformity IV (T(4)(6), J/T) existed in northeastern, northern and southwestern, medium-angle and monoclinal angular unconfortnity formed in Tabei and Kongquehe area, folded angular unconformity formed in Tadong faulted-high. Yanshanian, the unconformity V (T(4)(0), K/J) presented NNE-SSW, NNW-SSN uplift and denudation, denuded intensity is the largest in Bachu uplift and Southeast uplift. Himalayan, the angular unconformity VI (T(3)(1), E/K) derived from S-N compression in early stage, and then sustained uplift absence from Cretaceous to Eocene in Bachu uplift in later stage. Tectonic unconformities formation responded to tectogenesis and the development of peripheral orogenic belt of Tarim basin in different period. Tectogenesis controlled the tectonic unconformities configuration and distribution, and paleo-uplift development. Tectonic unconformities influenced the unconformity trap formation and hydrocarbon accumulation.
学科主题	矿床地质
WOS关键词	SOUTH ALTYN-TAGH ; TIBETAN PLATEAU ; GRANULITE ; CHINA
WOS研究方向	Geology
语种	中文
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000287822100017
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39422]
专题	中国地质调查局
作者单位	Explorat & Prod Res Inst Sinopec, Beijing 10083, Peoples R China
推荐引用方式 GB/T 7714	He, BZ ,Xu, ZQ ,Rao, CL ,et al. Tectonic unconformities and their forming: Implication for hydrocarbon accumulations in Tarim basin[J]. ACTA PETROLOGICA SINICA,2011,27(1):253-265.
APA	He, BZ ,Xu, ZQ ,Rao, CL ,Li, HB ,&Cai, ZH .(2011).Tectonic unconformities and their forming: Implication for hydrocarbon accumulations in Tarim basin.ACTA PETROLOGICA SINICA,27(1),253-265.
MLA	He, BZ ,et al."Tectonic unconformities and their forming: Implication for hydrocarbon accumulations in Tarim basin".ACTA PETROLOGICA SINICA 27.1(2011):253-265.