Zircon (U-Th)/He thermochronological constraints on Cretaceous thermal extension of Dabieshan orogen

查看全文 作　　者：Peter [1]W.REINERS

机构地区：[1]Department of Geology and Geophysics , Yale University, New Haven, CT 06520-8109, USA

出　　处：《Progress in Natural Science:Materials International》索引2002年第12卷第7期,共4页

基　　金：Supported by the National Key Basic Research Special Foundation Project (Grant No. G2000078501) ; the Foundation for University Key Teachers of the Ministry of Education of China. 摘　　要：(U-Th)/He ages of 13 samples from Yuexi-Luotian core and its flanks in Dabieshan orogen fall in the range of 155~85 Ma. He ages for samples from the core range between 85~107 Ma, while those from the flanks range between 114~155 Ma. The result shows that the Yuexi-Luotian core was a thermal dome in Cretaceous with core temperature being much higher than those of the flanks. The thermal extension which resulted in the formation of Dabie core complex lasted until ca. 85 Ma. The magnitude of exhumation in the core is approximately 1528.8 m more than that in the flanks. 关键词：Dabieshan, extension, (U-Th)/He thermochronology.

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Zircon (U-Th)/He thermochronological constraints on Cretaceous thermal extension of Dabieshan orogen

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