Inversion of background thermal history since the formation of the Tarim Craton

doi:10.6038/cjg2019L0802

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

	Inversion of background thermal history since the formation of the Tarim Craton
	Cao HouZhen 1,2,3; He LiJuan 1,2,3; Zhang LinYou 1,2,3
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2019
卷号	62 期号:1 页码:236-247
关键词	Tarim craton Thermal evolution Secular cooling Lithosphere thickness Tectono-thermal event
ISSN号	0001-5733
DOI	10.6038/cjg2019L0802
英文摘要	The Tarim basin is a typical large-scale superimposed structure which developed on a Archean Early Proterozoic crystalline basement, with stable craton properties. Its present day surface heat flux is only 43 mW.m(-2), with average geothermal gradient 21 degrees C.km(-1) and Moho temperature 550 degrees C. The low heat flow background value indicates that this basin experienced a process of secular cooling and thickening. However, for such a secular cooling process, previous studies only concentrated on Phanerozoic stage and did not cover the entire thermal history of Tarim. In this paper, we use the thermal data of the Tarim area as a constraint, and set up the bottom boundary conditions according to different mantle dynamic models. Then, the background thermal history of Tarim is reconstructed by forward modeling, which fills the gap in the study of thermal history before the Palaeozoic in this region. The results show that the background heat flow of Tarim was decreasing (reduced from 85 mW.m(-2) to 43 mW.m(-2)) and the lithosphere was thickening (increased from 130 km to 190 km) continuously since the basin's formation. On a long time scale, the thermal evolution model of the Tarim craton is secular cooling and thickening, which is similar to that of other typical cratons in the world. While, under the influence of short-term local tectono-thermal events, the thermal history of the Tarim craton was superposed by about 20 similar to 40 mW.m(-2) thermal disturbance on the trend of secular cooling.
WOS关键词	CONTINENTAL HEAT-FLOW ; TECTONOTHERMAL EVOLUTION ; ARCHEAN CRATONS ; MANTLE ; LITHOSPHERE ; BASIN ; THICKNESS ; CONVECTION ; PROVINCE ; BENEATH
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000457640700017
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90548]
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	He LiJuan
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cao HouZhen,He LiJuan,Zhang LinYou. Inversion of background thermal history since the formation of the Tarim Craton[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2019,62(1):236-247.
APA	Cao HouZhen,He LiJuan,&Zhang LinYou.(2019).Inversion of background thermal history since the formation of the Tarim Craton.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,62(1),236-247.
MLA	Cao HouZhen,et al."Inversion of background thermal history since the formation of the Tarim Craton".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 62.1(2019):236-247.