干旱区生态环境知识资源中心(Arid): Structural architecture of Neoproterozoic rifting depression groups in the Tarim Basin and their formation dynamics

Arid

DOI	10.1007/s11430-018-9286-6
	Structural architecture of Neoproterozoic rifting depression groups in the Tarim Basin and their formation dynamics
	He, Bizhu 1; Jiao, Cunli 2; Huang, Taizhu 3; Zhou, Xingui 4; Cai, Zhihui 1; Cao, Zicheng 3; Jiang, Zhongzheng 3; Cui, Junwen 1; Yu, Zhuoyin 1; Chen, Weiwei 1; Liu, Ruohan 1; Yun, Xiaorui 1; Hao, Guangming 1
通讯作者	He, Bizhu
来源期刊	SCIENCE CHINA-EARTH SCIENCES
ISSN	1674-7313
EISSN	1869-1897
出版年	2019
卷号	62 期号:3 页码:529-549
英文摘要	The Tarim Basin is the largest, oil-bearing, superimposed basin in the northwest of China. The evolution and tectonic properties of the initial Tarim Basin have been hotly disputed and remain enigmatic. The Neoproterozoic basin is covered by a vast desert and a huge-thickness of sedimentary strata, has experienced multiple tectonic movements, had a low signal to noise ratios (SNRs) of deep seismic reflection data, all of which have posed critical obstacles to research. We analysed four field outcrops, 18 wells distributed throughout the basin, 27 reprocessed seismic reflection profiles with higher SNRs across the basin and many ancillary local 2D and 3D profiles and aeromagnetic data. We found about 20 normal fault-controlled rifting depressions of the Cryogenian and Ediacaran scattered throughout the basin, which developed on the Precambrian metamorphic and crystalline basement. The structural framework is clearly different from that of the overlying Phanerozoic. The rifting depressions consist of mainly half grabens, symmetrical troughs and horst-grabens. From the northeast to southwest of the basin, they are divided into three rifting depression groups with the WNW, ENE, and NW-trends that are mainly controlled by normal faults. The maximum thicknesses of the strata are up to 4100 m. From the Cryogenian to Ediacaran, most of the main inherited faults to active and eventually ceased at the end of the Ediacaran or Early Cambrian, while subsidence centres appeared and migrated eastward along the faults. They revealed that the different parts of the Tarim continental block were in NNE-SSW-oriented and NNW-SSE-oriented extensional paleo-stress fields (relative to the present) during the Neoproterozoic, and were accompanied by clockwise shearing. According to the analysis of the activities of syn-sedimentary faults, filling sediments, magmatic events, and coordination with aeromagnetic anomalies, the tectonic properties of the fault depressions are different and are primarily continental rifts or intra-continental fault-controlled basins. The rifting phases mainly occurred from 0.8-0.61 Ga. The formation of the rifting depression was associated with the initial opening of the South Altun-West Kunlun Ocean and the South Tianshan Ocean, which were located at the northern and southern margins of the Tarim Block, respectively, in response to the break-up of the Supercontinent Rodinia and the initial opening of the Proto-Tethys Ocean.
英文关键词	Rifting depression groups Normal faults Extensional and clockwise shearing Cryogenian and Ediacaran Continental rift and intra-continental fault-controlled basin Tarim Basin
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000460181500003
WOS关键词	U-PB AGES ; NW CHINA ; NORTHWEST CHINA ; ZIRCON GEOCHRONOLOGY ; SOUTHWESTERN TARIM ; VOLCANIC-ROCKS ; WESTERN CHINA ; ALTYN TAGH ; RODINIA SUPERCONTINENT ; PRECAMBRIAN BASEMENT
WOS类目	Geosciences, Multidisciplinary
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/2XILL650/218558
作者单位	1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China; 2.SINOPEC, Explorat & Prod Res Inst, Beijing 100083, Peoples R China; 3.SINOPEC, Inst Northwestern Petr Subsidiary, Urumqi 830011, Peoples R China; 4.China Geol Survey, Oil & Gas Invest Ctr, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	He, Bizhu,Jiao, Cunli,Huang, Taizhu,et al. Structural architecture of Neoproterozoic rifting depression groups in the Tarim Basin and their formation dynamics[J],2019,62(3):529-549.
APA	He, Bizhu.,Jiao, Cunli.,Huang, Taizhu.,Zhou, Xingui.,Cai, Zhihui.,...&Hao, Guangming.(2019).Structural architecture of Neoproterozoic rifting depression groups in the Tarim Basin and their formation dynamics.SCIENCE CHINA-EARTH SCIENCES,62(3),529-549.
MLA	He, Bizhu,et al."Structural architecture of Neoproterozoic rifting depression groups in the Tarim Basin and their formation dynamics".SCIENCE CHINA-EARTH SCIENCES 62.3(2019):529-549.