Thermal Evolution History of the Upper Paleozoic in Yanchang Exploratory Area, Ordos Basin
详细信息
- 责任者：Yu Qiang (State Key Laboratory of Continental Dynamics ; Department of Geology ; Northwest University ; Xi’an ; 710069 ; CHina) ; Ren Zhanli
- 刊名：Geological Review
- 出版年：2012
- 卷期：58(2)
- 关键词：古生代 ; Paleozoic ; 热演化 ; thermal evolution ; 鄂尔多斯盆地 ; Ordos Basin
- 页码：p.303-308
- 图表：8 illus., 8 refs.
- 分类号：1003
- issnNo：ISSN0371-5736
- isbnNo：CN11-1952/P
摘要
With the analysis of the gas-testing data, the Upper Paleozoic reservoir temperature in Yanchang area has been calculated. Based on thermal evolution indicators and palaeogeothermal recovery, it is indicated that the Upper Paleozoic source rocks have reached the maturity stage and the over-maturity stage. The paleo-geothermal gradient in different period is discussed. The erosion thickness of the formation in this region was recovered. The thermal evolution history of Upper Paleozoic in Yanchang exploratory area has been reproduced. The main sedimentation period is Late Triassic (226～208Ma). The main gas generation period of the Upper Paleozoic in Yanchang area is from Late Jurassic to Early Cretaceous.