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Lithospheric thermal structure of the North China Craton and its geodynamic implications

文献类型：期刊论文

作者Liu, Qiongying1,2; Zhang, Linyou2,3; Zhang, Chao2,3; He, Lijuan2,3
刊名JOURNAL OF GEODYNAMICS
出版日期2016-12-01
卷号102页码:139-150
关键词North China Craton Lithospheric thermal structure Thermal lithospheric thickness Heat flow Pacific plate Geodynamic mechanism
DOI10.1016/j.jog.2016.09.005
文献子类Article
英文摘要We conduct 2-D numerical modeling of the lithospheric thermal structure of the North China Craton (NCC) on basis of twenty-four crustal velocity structure profiles. About five hundred heat flow data constitute the principal constraints for our modeling. The modeling results demonstrate marked lateral variations in thermal regime of the crust-lithosphere system in the NCC. The average mantle heat flow decreases from 38 +/- 5 mW m(-2) under the Bohai Bay Basin in the eastern NCC to 27 +/- 4 mW m(-2) under the Ordos Basin in the western NCC, characterized by a 'cold crust but hot mantle' structure and a 'hot crust but cold mantle' structure, respectively. Thermal lithospheric thickness varies from similar to 65 km beneath the Tan-Lu Fault zone to similar to 160 km beneath the western and northern Ordos Basin, with similar trend to the seismic lithosphere. However, the disparities in thickness between the thermal and seismic lithosphere are within 20 km beneath the Bohai Bay Basin, but 30-90 km beneath the Shanxi-Weihe Graben and 50-120 km beneath the Ordos Basin. This may imply a westward thickening trend of the rheological boundary layer, which might be attributed to the reducing of asthenosphere viscosity due to hydrous fluid released by dehydration of the subducting Pacific Plate under the eastern NCC. Combined with other pieces of evidence, we suggest that vigorous mantle processes may occur beneath the eastern NCC, whereas the western NCC is relatively stable. (C) 2016 Elsevier Ltd. All rights reserved.
WOS关键词BOHAI BAY BASIN ; SEISMIC-SOUNDING PROFILE ; WAVE VELOCITY STRUCTURE ; SINO-KOREAN CRATON ; BIG MANTLE WEDGE ; HEAT-FLOW ; CONTINENTAL LITHOSPHERE ; EASTERN CHINA ; CRUSTAL STRUCTURE ; RHEOLOGICAL STRUCTURE
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000389729400010
资助机构National Key Research and Development Program of China(2016YFC0601005) ; National Key Research and Development Program of China(2016YFC0601005) ; National Key Research and Development Program of China(2016YFC0601005) ; National Key Research and Development Program of China(2016YFC0601005) ; National Natural Science Foundation of China(41574075) ; National Natural Science Foundation of China(41574075) ; National Natural Science Foundation of China(41574075) ; National Natural Science Foundation of China(41574075) ; National Key Research and Development Program of China(2016YFC0601005) ; National Key Research and Development Program of China(2016YFC0601005) ; National Key Research and Development Program of China(2016YFC0601005) ; National Key Research and Development Program of China(2016YFC0601005) ; National Natural Science Foundation of China(41574075) ; National Natural Science Foundation of China(41574075) ; National Natural Science Foundation of China(41574075) ; National Natural Science Foundation of China(41574075)
源URL[http://ir.iggcas.ac.cn/handle/132A11/53174]  
专题地质与地球物理研究所_岩石圈演化研究室
作者单位1.China Earthquake Adm, Inst Geol, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Qiongying,Zhang, Linyou,Zhang, Chao,et al. Lithospheric thermal structure of the North China Craton and its geodynamic implications[J]. JOURNAL OF GEODYNAMICS,2016,102:139-150.
APA Liu, Qiongying,Zhang, Linyou,Zhang, Chao,&He, Lijuan.(2016).Lithospheric thermal structure of the North China Craton and its geodynamic implications.JOURNAL OF GEODYNAMICS,102,139-150.
MLA Liu, Qiongying,et al."Lithospheric thermal structure of the North China Craton and its geodynamic implications".JOURNAL OF GEODYNAMICS 102(2016):139-150.

入库方式： OAI收割

来源：地质与地球物理研究所

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