Tectonic evolution of the Northern Qaidam basin during Mesozoic and Cenozoic eras

GAO Xian-zhi; CHEN Fa-jing; MA Da-de; WANG Li-qun; LIU Zhen

Northwestern Geology > 2003 > 36(4): 16-24.

GAO Xian-zhi, CHEN Fa-jing, MA Da-de, et al. Tectonic evolution of the Northern Qaidam basin during Mesozoic and Cenozoic eras[J]. Northwestern Geology, 2003, 36(4): 16-24.

Citation:

GAO Xian-zhi, CHEN Fa-jing, MA Da-de, et al. Tectonic evolution of the Northern Qaidam basin during Mesozoic and Cenozoic eras[J]. Northwestern Geology, 2003, 36(4): 16-24.

Citation:

GAO Xian-zhi, CHEN Fa-jing, MA Da-de, et al. Tectonic evolution of the Northern Qaidam basin during Mesozoic and Cenozoic eras[J]. Northwestern Geology, 2003, 36(4): 16-24.

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Tectonic evolution of the Northern Qaidam basin during Mesozoic and Cenozoic eras

1.
Key lab. of mechanism in petroleum accumulation, University of petroleum, the ministry of education, Beijing, China 102249
2.
China geoscience university, Beijing, China 100083
3.
Exploration and development institute of Qinghai oilfield, Dunhuang, China, 736200

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Received Date: April 26, 2002
Revised Date: May 07, 2003
Published Date: December 04, 2003

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Abstract

Abstract

Qaidam basin is one of the large Mesozoic and Cenozoic basins in the Northwestern China. The Jurassic system mainly occurs in the northern area of Qaidam basin. The basin developed on the pre-Jurassic cratonic basement. Based on the Mesozoic-Cenozoic tectonic setting of the Northwestern China, the Qaidam basin evolved twice from extension to compression during Mesozoic and Cenozoic eras with more and more weaker in extention and more and more intensively in compression. The prototype basin in Jurassic was a weakly extending depression;Begining Oligocene epoch,the basin was becoming in tensively compressed and the structure distribution framework today was formed. The Jurassic petroleum system of the Northern Qaidam basin was influenced by the tectonic evolution on the formation and distribution of the petroleum,and resulted in the better potential exploration in the Eocene strata and poor in the Jurassic strata.
- prototype basin,
- tectonic evolution,
- weakly extending depression,
- flexing depression,
- Qaidam basin,
- Mesozoic and Cenozoic eras

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Tectonic evolution of the Northern Qaidam basin during Mesozoic and Cenozoic eras

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