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The Cretaceous tectonic event in the Qiangtang Basin and its implications for hydrocarbon accumulation 被引量:11

The Cretaceous tectonic event in the Qiangtang Basin and its implications for hydrocarbon accumulation
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摘要 The tectonic event during Cretaceous and its relationship with hydrocarbon accumulation in the Qiangtang Basin is discussed based on zircon U-Pb dating and the study of deformation, thermochronology and hydrocarbon formation. LA-ICPMS zircon U-Pb dating indicates that the tectonic event took place during the Early-Late Cretaceous (125-75Ma). The event not only established the framework and the styles of structural traps in the basin, but also led to the cessation of the first hydrocarbon formation and the destruction of previous oil pools. The light crude oil in the basin was formed during the second hydrocarbon formation stage in the Cenozoic, and ancient structural traps formed during the Cretaceous event are promising targets for oil and gas exploration. The tectonic event during Cretaceous and its relationship with hydrocarbon accumulation in the Qiangtang Basin is discussed based on zircon U-Pb dating and the study of deformation, thermochronology and hydrocarbon formation. LA-ICPMS zircon U-Pb dating indicates that the tectonic event took place during the Early-Late Cretaceous (125-75Ma). The event not only established the framework and the styles of structural traps in the basin, but also led to the cessation of the first hydrocarbon formation and the destruction of previous oil pools. The light crude oil in the basin was formed during the second hydrocarbon formation stage in the Cenozoic, and ancient structural traps formed during the Cretaceous event are promising targets for oil and gas exploration.
出处 《Petroleum Science》 SCIE CAS CSCD 2010年第4期466-471,共6页 石油科学(英文版)
基金 supported by the National Natural Science Foundation of China (40672086) the Ministry of Science and Technology "973" Project (2006CB701400) the Ministry of Land and Resources (XQ2004-06)
关键词 Qinghai-Tibet plateau Qiangtang Basin tectonic event CRETACEOUS hydrocarbon accumulation Qinghai-Tibet plateau, Qiangtang Basin, tectonic event, Cretaceous, hydrocarbon accumulation
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