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学科主题: Geochemistry & Geophysics
题名: The exhumation process of Mufushan granite in Jiangnan uplift since Cenozoic: Evidence from low-temperature thermochronology
作者: [Shi Hong-Cai ; Shi Xiao-Bin ; Yang Xiao-Qiu ; Jiang Hai-Yan] Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China ; [Shi Hong-Cai ; Jiang Hai-Yan] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
通讯作者: hcshi@scsio.ac.cn
关键词: Mufushan pluton ; Low-temperature thermochronology ; Jiangnan uplift ; Tectonic evolution ; Fission track
刊名: CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
发表日期: 2013
卷: 56, 期:6, 页:1945-1957
部门归属: 海洋地质
摘要: Jiangnan Uplift located in the collision zone between Yangtze and Cathaysia block is the key to interpret the tectonic evolution of Smith China block. The Cenozoic thermal history and the uplift processe of Mufushan pluton are constrained by the combination of analysis of apatite fission track and (U-Th-Sm)/He ages with modeling of fission track length distribution. Based on analysis of thermochronological dating, the authors probed into the relationship between the thermochronological evolution and the tectonic development combining with regional tectonic settings. The exhumation of plutons arrived at about 4800 m since 80 Ma, and the uplift processes were not uniform in space, and different plutons had somewhat different uplift processes. Thermal history modeling of the AFT data shows, that the Mufushan pluton experienced three episodes of cooling event, two of which exhumed rapidly happened in Upper Cretaceous-Paleocene (about 80 similar to 50 Ma) and Upper Miocene (since 10 Ma). There is a period of relative thermal stability at 50 similar to 10 Ma and exit the PAZ. The first stage of rapid uplifting during 80 similar to 50 Ma in this region is coeval with extension episode of Mid-Lower Yangtze during Himalayan which resulted in the formation of fault basin and exhumation of shoulder block; the Upper Miocene rapid cooling since 10 Ma is attributed to the westward movement and subduction of Pacific plate. The uplift and exhumation of Mufushan pluton since Late Yanshanian led to a good deposition response in basins and the cooling events of three phases just coincided with the regional tectonic settings of study area.
语种: 中文
原文出处: 查看原文
WOS记录号: WOS:000321415200017
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/11128
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Recommended Citation:
[Shi Hong-Cai; Shi Xiao-Bin; Yang Xiao-Qiu; Jiang Hai-Yan] Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China; [Shi Hong-Cai; Jiang Hai-Yan] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China.The exhumation process of Mufushan granite in Jiangnan uplift since Cenozoic: Evidence from low-temperature thermochronology,CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2013,56(6):1945-1957
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