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Quantifying the Denudations of Major Tectonic Events in Sichuan Basin: Constrained by the Paleothermal Records

详细信息

责任者：Zhu Chuanqing (Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Beijing 100029 ; China) ; Xu Ming
刊名：Geology in China
出版年：2009
卷期：36(6)
关键词：古地温 ; paleogeotherm ; 沉积盆地 ; sedimentary basins ; 地层剥蚀 ; stratigraphic erosion ; 四川盆地 ; Sichuan Basin
页码：p.1268-1277
图表：8 illus., 2 tables, 47 refs.
分类号：0803
issnNo：ISSN1000-3657
isbnNo：CN11-1167/P

摘要

Based on the paleo-thermal indicator of vitrinite reflectance (R_o), the authors reconstructed the denudation thickness of the sedimentary formation in the boreholes of Sichuan Basin. The largest denudation occurred in southeastern Sichuan Basin and reached 2 000 m in Caledonian period. During Dongwu movement, the denudation reached the values of 260～450 m in southwestern Sichuan Basin and reached 800～900 m in southeastern Sichuan Basin. Both areas were close to the central zone of Emeishan basalts. According to the inversion results of many boreholes, the maximum denudation occurred in areas closed to the basin boundary and reached 2 000 m in Himalayan period.

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