气候变化领域集成服务门户(CCPortal): A Thermal Pulse Induced by a Permian Mantle Plume in the Tarim Basin, Northwest China: Constraints From Clumped Isotope Thermometry and In Situ Calcite U-Pb Dating

CCPortal

DOI	10.1029/2020JB020636
	A Thermal Pulse Induced by a Permian Mantle Plume in the Tarim Basin, Northwest China: Constraints From Clumped Isotope Thermometry and In Situ Calcite U-Pb Dating
	Cong F.; Tian J.; Hao F.; Licht A.; Liu Y.; Cao Z.; Eiler J.M.
发表日期	2021
ISSN	21699313
卷号	126 期号:4
英文摘要	High burial temperature and a lack of material for traditional thermal proxies significantly impede the understanding of the thermal history of carbonate stratigraphic sequences in deep time. Carbonate clumped isotope thermometry interpreted through models of solid-state isotopic reordering and in situ U-Pb dating provides a new methodology for reconstructing thermal histories of such successions. Calcite fabrics (micrite cements and veins) from deeply buried (5,000–8,000 m) Ordovician carbonate intervals in the Tarim Basin were analyzed for their carbonate clumped isotope compositions and U-Pb ages, and the results were used to estimate maximum peak burial temperatures. Reconstructed burial temperatures reveal a previously ignored thermal pulse in the range of 160°C–190°C during the Permian period. Maximum geothermal gradients at the time of peak burial temperature varied from 26.8°C/km to 69.3°C/km, with higher values in the northern Tarim Basin. We show that the spatial patterns of peak burial temperature and geothermal gradients closely correspond to the distribution of the Tarim Large Igneous Province, which emplaced during the Permian following the emplacement of a mantle plume beneath the Tarim Basin. We thus propose that the thermal pulse recorded in Tarim Ordovician limestones resulted from Permian mantle plume activity. The reconstructed thermal history has important implications for our understanding of source-rock hydrocarbon generating history, hydrocarbon accumulation, and fluid flow history in the Tarim Basin. This study also demonstrates the potential of the integration of Δ47, U-Pb dating of carbonates and solid-state reordering models as an integrated thermochronological method for reconstructing thermal histories of deeply buried carbonate intervals. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	calcite U-Pb dating; clumped isotope; Paleozoic; solid-state reordering; Tarim Basin; thermal history
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187240
作者单位	Key Laboratory of Tectonics and Petroleum Resources, Ministry of Education, China University of Geosciences, Wuhan, China; Key Laboratory of Deep Oil and Gas, China University of Petroleum (East China), Qingdao, China; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States; Department of Earth and Space Sciences, University of Washington, Seattle, WA, United States; Centre Européen de Recherche et d’Enseignement des Géosciences de l’Environnement (Cerege), UMR CNRS7330, Aix-en-Provence, France; State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing, China; Research Institute of Petroleum Exploration and Production, SINOPEC Northwest Company, Urumqi, China
推荐引用方式 GB/T 7714	Cong F.,Tian J.,Hao F.,et al. A Thermal Pulse Induced by a Permian Mantle Plume in the Tarim Basin, Northwest China: Constraints From Clumped Isotope Thermometry and In Situ Calcite U-Pb Dating[J],2021,126(4).
APA	Cong F..,Tian J..,Hao F..,Licht A..,Liu Y..,...&Eiler J.M..(2021).A Thermal Pulse Induced by a Permian Mantle Plume in the Tarim Basin, Northwest China: Constraints From Clumped Isotope Thermometry and In Situ Calcite U-Pb Dating.Journal of Geophysical Research: Solid Earth,126(4).
MLA	Cong F.,et al."A Thermal Pulse Induced by a Permian Mantle Plume in the Tarim Basin, Northwest China: Constraints From Clumped Isotope Thermometry and In Situ Calcite U-Pb Dating".Journal of Geophysical Research: Solid Earth 126.4(2021).