Tectono-thermal modeling of the Bohai Bay Basin since the Cenozoic

doi:10.6038/cjg2019M0637

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Tectono-thermal modeling of the Bohai Bay Basin since the Cenozoic
	Liu QiongYing 1; He LiJuan 2,3,4
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2019
卷号	62 期号:1 页码:219-235
关键词	Bohai Bay Basin Cenozoic Tectono-thermal modeling Heat flow Tectonic evolution Pacific Plate subduction
ISSN号	0001-5733
DOI	10.6038/cjg2019M0637
英文摘要	The 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.
WOS关键词	EASTERN NORTH CHINA ; HEAT-FLOW ; GEOTHERMAL EVIDENCE ; THERMAL HISTORY ; LITHOSPHERE ; CRATON ; SUBSIDENCE ; EVOLUTION ; DEPRESSION ; MECHANISM
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000457640700016
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90507]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者	Liu QiongYing
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.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 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.