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Tectono-thermal modeling of the Bohai Bay Basin since the Cenozoic
Liu QiongYing1; He LiJuan2,3,4
2019
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
Volume62Issue:1Pages:219-235
AbstractThe Bohai Bay Basin (BBB) is the largest Cenozoic rifted basin with the most complete Cenozoic succession compared to other basins in North China. Therefore, it is an ideal region for studying basin evolution. In this paper, tectono-thermal modeling is performed along nine seismic profiles of the BBB to reveal the spatial and temporal differences of the extension intensity and thermal evolution, which can provide evidence for the geodynamic mechanism of basin evolution. The modeling results show that the total stretching factors for different depressions in the BBB range from 1.28 to 2.39, with the largest value in the Bozhong and Liaodong Bay depressions and the minimum in the Liaohe and Linqing depressions, respectively. The basin basement heat flow reached its peaks during the middle-late Paleogene with values of 71 similar to 100 mW . m(2), and then the basin cooled down during the remaining Cenozoic era. The arrival of heat flow peak was earlier in the west than that in the east of the basin. The modeling results of the extension factor and basement heat flow indicate that the stretching center of the BBB migrated from west to east and from south to north during the Cenozoic, which is consistent with the migration of the depocenters and subsidence centers. We infer that the episodic eastward retreat of the Pacific slab might be the main dynamic mechanism for the episodic extension and eastward migration of stretching centers in the basin.
KeywordBohai Bay Basin Cenozoic Tectono-thermal modeling Heat flow Tectonic evolution Pacific Plate subduction
DOI10.6038/cjg2019M0637
WOS KeywordEASTERN NORTH CHINA ; HEAT-FLOW ; GEOTHERMAL EVIDENCE ; THERMAL HISTORY ; LITHOSPHERE ; CRATON ; SUBSIDENCE ; EVOLUTION ; DEPRESSION ; MECHANISM
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000457640700016
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/90507
Collection岩石圈演化国家重点实验室
Corresponding AuthorLiu QiongYing
Affiliation1.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.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liu QiongYing,He LiJuan. Tectono-thermal modeling of the Bohai Bay Basin since the Cenozoic[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2019,62(1):219-235.
APA Liu QiongYing,&He LiJuan.(2019).Tectono-thermal modeling of the Bohai Bay Basin since the Cenozoic.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,62(1),219-235.
MLA Liu QiongYing,et al."Tectono-thermal modeling of the Bohai Bay Basin since the Cenozoic".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 62.1(2019):219-235.
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