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

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	Structural architecture of Neoproterozoic rifting depression groups in the Tarim Basin and their formation dynamics
	He Bizhu; Jiao Cunli; Huang Taizhu; Zhou Xingui; Cai Zhihui; Cao Zicheng; Jiang Zhongzheng; Cui Junwen; Yu Zhuoyin; Chen Weiwei; Liu Ruohan; Yun Xiaorui; Hao Guangming
来源期刊	Science China. Earth Sciences
ISSN	1674-7313
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-SSWoriented 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
收录类别	CSCD
WOS研究方向	Mineralogy
CSCD记录号	CSCD:6465550
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336084
作者单位	He Bizhu, Institute of Geology,Chinese Academy of Geological Sciences, Beijing 100037, China.; Cai Zhihui, Institute of Geology,Chinese Academy of Geological Sciences, Beijing 100037, China.; Cui Junwen, Institute of Geology,Chinese Academy of Geological Sciences, Beijing 100037, China.; Yu Zhuoyin, Institute of Geology,Chinese Academy of Geological Sciences, Beijing 100037, China.; Chen Weiwei, Institute of Geology,Chinese Academy of Geological Sciences, Beijing 100037, China.; Liu Ruohan, Institute of Geology,Chinese Academy of Geological Sciences, Beijing 100037, China.; Yun Xiaorui, Institute of Geology,Chinese Academy of Geological Sciences, Beijing 100037, China.; Hao Guangming, Institute of Geology,Chinese Academy of Geological Sciences, Beijing 100037, China.; Jiao Cunli, Exploration and Production Research Institute of SINOPEC, Beijing 100083, China.; Huang Taizhu, Institute of Northwestern Petroleum Subsidiary of SINOPEC, Urumqi, Xinjiang 830011, China.; Cao Zicheng, Institute of Northwestern Pe...
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.