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Thermal Lithospheric Thickness of the Sichuan Basin and its Geological Implications
投稿时间:2022-02-13  修订日期:2022-05-31  点此下载全文
引用本文:ZHU Chuanqing,QIU Nansheng,CHEN Tiange,XU Ming,DING Rui,YANG Yabo.2022.Thermal Lithospheric Thickness of the Sichuan Basin and its Geological Implications[J].ACTA GEOLOGICA SINICA(English edition),96(4):1323~1330
摘要点击次数: 117
全文下载次数: 78
DOI:10.1111/1755-6724.14976
作者单位E-mail
ZHU Chuanqing 1 College of Geosciences, China University of Petroleum, Beijing 102249, China 2 State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China zhucq@cup.edu.cn 
QIU Nansheng 1 College of Geosciences, China University of Petroleum, Beijing 102249, China 2 State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China  
CHEN Tiange 3 Research Institute of Petroleum Exploration Development, Beijing 100083, China  
XU Ming 4 Tianjin Geothermal Exploration and Development-design Institute, Tianjin 300250, China  
DING Rui 1 College of Geosciences, China University of Petroleum, Beijing 102249, China 2 State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China  
YANG Yabo 1 College of Geosciences, China University of Petroleum, Beijing 102249, China 2 State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China  
 
Author NameAffiliationE-mail
ZHU Chuanqing 1 College of Geosciences, China University of Petroleum, Beijing 102249, China 2 State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China zhucq@cup.edu.cn 
QIU Nansheng 1 College of Geosciences, China University of Petroleum, Beijing 102249, China 2 State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China  
CHEN Tiange 3 Research Institute of Petroleum Exploration Development, Beijing 100083, China  
XU Ming 4 Tianjin Geothermal Exploration and Development-design Institute, Tianjin 300250, China  
DING Rui 1 College of Geosciences, China University of Petroleum, Beijing 102249, China 2 State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China  
YANG Yabo 1 College of Geosciences, China University of Petroleum, Beijing 102249, China 2 State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China  
Abstract:Thermal lithospheric thickness is an important parameter in studying the tectonic-thermal evolution of basins and plate dynamics. Based on the measured geothermal data and thermophysical properties of the rocks, the thermal lithospheric thickness of the Sichuan Basin was calculated according to the principles of heat conduction in the crust and lithospheric mantle. The calculation results revealed that the thickness of the thermal lithosphere in the Sichuan Basin is 140–190 km and is unevenly distributed. The thickness of the thermal lithosphere in central Sichuan and southwestern Sichuan is less than 160 km, while that in the western Sichuan depression and eastern Sichuan is larger (~180 km). The distribution of the thermal lithospheric thickness in the basin has a good correlation with the geological units and the thickness of the sedimentary layers. The thickness of the thermal lithosphere in the depression area, which has thick sedimentary layers and the fault-fold zone with shallow crustal deformation and thickening, are larger than that in the basement uplifted area, which has thin sedimentary layers. The calculated thermal lithospheric thickness is in good agreement with the geophysical data and reflects the stable conduction temperature field in the Sichuan Basin. The present thermal regime and thermal lithospheric thickness of the Sichuan Basin indicate that flexural thickening of the lithosphere occurred in the eastern Sichuan fault-fold belt and the Longmen Mountain–Western Sichuan depression foreland basin system, while asthenospheric uplift occurred in the central Sichuan region, which were the result of the expansion of the Xuefeng orogeny from the east and the compression of the Tibetan Plateau from the west.
keywords:thermal lithospheric thickness, geothermal field, heat flow, thermal property, Sichuan Basin
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版权所有:Acta Geologica Sinica (English Edition)
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