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Thermal imprints of late Permian Emeishan basalt effusion: Evidence from zircon fission-track thermochronology

文献类型：期刊论文

作者Hu, Di3,4,5; Tian, Yuntao1,6; Hu, Jie3,4,5; Rao, Song2; Wang, Yibo3,4,5; Zhang, Chao3,4,5; Hu, Shengbiao3,4,5
刊名LITHOS
出版日期2020
卷号352页码:10
关键词Detrital zircon Fission-track dating Emeishan LIP Thermal imprints Yangtze craton
ISSN号0024-4937
DOI10.1016/j.lithos.2019.105224
英文摘要Late Permian Emeishan large igneous province (LIP) developed in response to an ascending mantle plume beneath the southwestern Yangtze Craton, China. Mantle plume models predict two types of thermal effect on the lithosphere: (1) high lithospheric heat flow anomalies due to the ascending magma, and (2) heating of underlying country rocks by erupted lava flow. Evidence for these two effects of the Emeishan LIP may be documented in pre-LIP strata. As such, we determined the maximum temperature of sedimentary rocks deposited before and after the LIP using zircon fission-track (ZFT) thermochronology, which is sensitive to temperatures of 150-250 degrees C. ZFT ages of post-LIP sedimentary rocks are variable and overlap with depositional ages, reflecting post-LIP burial heating should be lower than the ZFT closure temperature. Pre-LIP samples yield scattered ZFT ages younger than their depositional ages, and contain an older age component that increases with depth. This indicates that the upper part of the pre-LIP strata should have experienced higher temperature than lower ones. Such a heating pattern cannot be explained by pre- or post-LIP burial heating, which predict higher temperatures and thus younger ages for stratigraphically lower samples. We propose that the downward increasing age pattern is evidence for massive top-down lava heating. Forward thermal modelling suggests that a >1.5-km-thick effusive basalts is required to reset the ZFT ages of rocks that are similar to 3 km beneath the LIP. Our results support the existence of massive effusive basalts in the intermediate zone of the Late Permian Emeishan LIP. (C) 2019 Elsevier B.V. All rights reserved.
WOS关键词PLUME-LITHOSPHERE INTERACTION ; TECTONIC EVOLUTION ; YANGTZE CRATON ; SICHUAN BASIN ; SW CHINA ; DETRITAL THERMOCHRONOLOGY ; FLOOD BASALTS ; SOUTH CHINA ; CONSTRAINTS ; UPLIFT
资助项目National Natural Science Foundation of China (NSFC)[U1701641] ; National Natural Science Foundation of China (NSFC)[41772211] ; National Science and Technology Major Project of China[2017ZX05008-004] ; Guangdong Province Introduced Innovative RD Team[2016ZT06N331] ; Fundamental Research Funds for the Central Universities[19lgjc03]
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000515201500017
出版者ELSEVIER
资助机构National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; Guangdong Province Introduced Innovative RD Team ; Guangdong Province Introduced Innovative RD Team ; Guangdong Province Introduced Innovative RD Team ; Guangdong Province Introduced Innovative RD Team ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; Guangdong Province Introduced Innovative RD Team ; Guangdong Province Introduced Innovative RD Team ; Guangdong Province Introduced Innovative RD Team ; Guangdong Province Introduced Innovative RD Team ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; Guangdong Province Introduced Innovative RD Team ; Guangdong Province Introduced Innovative RD Team ; Guangdong Province Introduced Innovative RD Team ; Guangdong Province Introduced Innovative RD Team ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; Guangdong Province Introduced Innovative RD Team ; Guangdong Province Introduced Innovative RD Team ; Guangdong Province Introduced Innovative RD Team ; Guangdong Province Introduced Innovative RD Team ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
源URL[http://ir.iggcas.ac.cn/handle/132A11/95624]  
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Tian, Yuntao
作者单位1.Southern Marine Sci & Engn Guangdong Lab, Zhuhai 519082, Peoples R China
2.Yangtze Univ, Key Lab Explorat Technol Oil & Gas Resources, Minist Educ, Wuhan 430100, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
6.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangzhou 510275, Peoples R China
推荐引用方式
GB/T 7714		 Hu, Di,Tian, Yuntao,Hu, Jie,et al. Thermal imprints of late Permian Emeishan basalt effusion: Evidence from zircon fission-track thermochronology[J]. LITHOS,2020,352:10.
APA Hu, Di.,Tian, Yuntao.,Hu, Jie.,Rao, Song.,Wang, Yibo.,...&Hu, Shengbiao.(2020).Thermal imprints of late Permian Emeishan basalt effusion: Evidence from zircon fission-track thermochronology.LITHOS,352,10.
MLA Hu, Di,et al."Thermal imprints of late Permian Emeishan basalt effusion: Evidence from zircon fission-track thermochronology".LITHOS 352(2020):10.

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来源：地质与地球物理研究所

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