The Mesozoic Thermal Regime of Sichuan Basin and the Relationship between It and the Structural and Sedimentary Action of the Foreland Basin
详细信息
- 责任者：Zhu Chuanqing (Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Beifing 100029 ; China) ; Rao Song
- 刊名：Chinese Journal of Geology
- 出版年：2011
- 卷期：46(1)
- 关键词：地温梯度 ; geothermal gradient ; 前陆盆地 ; foreland basins ; 四川盆地 ; Sichuan Basin
- 页码：p.194-202
- 图表：4 illus., 1 table, 31 refs.
- 分类号：0400
- 出版序号：20120075
- issnNo：ISSN0563-5020
- isbnNo：CN11-1937/P
摘要
Thermal history reconstruction of the sedimentary basin is significant to the study of oil and gas exploration. The paleo-temperature profiles reconstructed based on the vitrinite reflectance data from boreholes in the Sichuan Basin using a paleo-temperature gradient method. The results show that the erosion in the top of the boreholes was about 3 700 m in the western, southeastern and northeastern Sichuan Basin,while was about 3 100 m in the central basin. The paleo-temperature gradient ranged 13.2~ 24.5 ℃/km, and the paleo-heat flow ranged 31.2 ~ 60.1 mW/m2. As a result of the structural and sedimentary action of the foreland basin evolution in Mesozoic, the heat flow was low in the Longmenshan and Dabashan foreland basins.