Yanshanian-Himalayan geodynamic transformation of the northwestern Junggar Basin, southwestern Central Asian Orogenic Belt (CAOB), and its significance for petroleum accumulation

doi:10.1016/j.gsf.2023.101565

	Yanshanian-Himalayan geodynamic transformation of the northwestern Junggar Basin, southwestern Central Asian Orogenic Belt (CAOB), and its significance for petroleum accumulation
	Zhi, Dongming 1,4; Zhang, Jingkun 2,3; Wu, Tao 4; Wu, Anbin 2; Tang, Yong 4; Liu, Yin 5; Cao, Jian 2
刊名	GEOSCIENCE FRONTIERS
	2023-07-01
卷号	14 期号:4 页码:10
关键词	Geodynamic transformation Tectonic far -field stress Yanshanian-Himalayan Central Asian Orogenic Belt Total petroleum system
ISSN号	1674-9871
DOI	10.1016/j.gsf.2023.101565
通讯作者	Zhang, Jingkun(zhangjk@nju.edu.cn)
英文摘要	The northwestern Junggar Basin in the southwestern Central Asian Orogenic Belt is a typical petroliferous basin. The widely distributed reservoirs in Jurassic-Cretaceous strata indicate that the region records Yanshanian-Himalayan tectonic activity, which affected the accumulation and distribution of petroleum. The mechanism of this effect, however, has not been fully explored. To fill the knowledge gap, we studied the structural geology and geochemistry of the well-exposed Wuerhe bitumen deposit. Our results indi-cate that deformation and hydrocarbon accumulation in the northwestern Junggar Basin during the Yanshanian-Himalayan geodynamic transformation involved two main stages. During the Yanshanian orogeny, a high-angle extensional fault system formed in Jurassic-Cretaceous strata at intermediate to shallow depths owing to dextral shear deformation in the orogenic belt. This fault system connected at depth with the Permian-Triassic oil-gas system, resulting in oil ascending to form fault-controlled reservoirs (e.g., a veined bitumen deposit). During the Himalayan orogeny, this fault system was deacti-vated owing to sinistral shear caused by far-field stress related to uplift of the Tibetan Plateau. This and the reservoir densification caused by cementation formed favorable hydrocarbon preservation and accu-mulation conditions. Therefore, the secondary oil reservoirs that formed during the Yanshanian- Himalayan tectonic transformation and the primary oil reservoirs that formed during Hercynian- Indosinian orogenies form a total and complex petroleum system comprising conventional and uncon-ventional petroleum reservoirs. This might be a common feature of oil-gas accumulation in the Central Asian Orogenic Belt and highlights the potential for petroleum exploration at intermediate-shal-low depths.(c) 2023 China University of Geosciences (Beijing) and Peking University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).
资助项目	National Natural Science Foundation of China[42102148] ; China Post-doctoral Science Foundation[2021M691497]
WOS关键词	NW CHINA IMPLICATIONS ; WEST JUNGGAR ; TECTONIC EVOLUTION ; OPHIOLITIC MELANGES ; FAULT ZONES ; TIEN-SHAN ; TIAN-SHAN ; BITUMEN ; BIODEGRADATION ; DEFORMATION
WOS研究方向	Geology
语种	英语
出版者	CHINA UNIV GEOSCIENCES, BEIJING
WOS记录号	WOS:000992922800001
资助机构	National Natural Science Foundation of China ; China Post-doctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/42141]
专题	中国科学院南京地质古生物研究所
通讯作者	Zhang, Jingkun
作者单位	1.PetroChina Tuha Oilfield Co, Hami 839000, Peoples R China 2.Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210023, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 4.PetroChina Xinjiang Oilfield Co, Karamay 843000, Peoples R China 5.China Univ Petr East China, Sch Geosci, Qingdao 266580, Peoples R China
推荐引用方式 GB/T 7714	Zhi, Dongming,Zhang, Jingkun,Wu, Tao,et al. Yanshanian-Himalayan geodynamic transformation of the northwestern Junggar Basin, southwestern Central Asian Orogenic Belt (CAOB), and its significance for petroleum accumulation[J]. GEOSCIENCE FRONTIERS,2023,14(4):10.
APA	Zhi, Dongming.,Zhang, Jingkun.,Wu, Tao.,Wu, Anbin.,Tang, Yong.,...&Cao, Jian.(2023).Yanshanian-Himalayan geodynamic transformation of the northwestern Junggar Basin, southwestern Central Asian Orogenic Belt (CAOB), and its significance for petroleum accumulation.GEOSCIENCE FRONTIERS,14(4),10.
MLA	Zhi, Dongming,et al."Yanshanian-Himalayan geodynamic transformation of the northwestern Junggar Basin, southwestern Central Asian Orogenic Belt (CAOB), and its significance for petroleum accumulation".GEOSCIENCE FRONTIERS 14.4(2023):10.