Constraints of the Jiangnan-Xuefeng Upheaval to the Depositional System and Paleogeography Distribution of Southeast Sichuan-South
详细信息
- 责任者：Hou Mingcai (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation ; Chengdu 610059 ; China) ; Chen Hongde
- 刊名：Journal of Chengdu University of Technology
- 出版年：2010
- 卷期：37(4)
- 关键词：隆起 ; uplifts ; 早志留世 ; Lower Silurian ; 岩相古地理 ; lithofacies paleogeography ; 四川 ; Sichuan Province ; 贵州 ; Guizhou Province
- 页码：p.395-400
- 图表：5 illus., 24 refs.
- 分类号：0803
- issnNo：ISSN1671-9727
- isbnNo：CN51-1634/N
摘要
In this paper, based on the study of the sedimentology and stratal relationship of the data on the outcrop and well of the Xiaoheba Formation in southeast Sichuan area between Early Paleozoic and Late Paleozoic, and integrated with the previous researches, the authors think that the Jiangnan-Xuefeng upheaval formed in the Early Silurian Shiniulan period of the late Caledonian, and the Guizhou centre upheaval and Sichuan centre upheaval were produced by the Duyun movement, being earlier than the Jiangnan-Xuefeng upheaval. Although the three upheavals may become the provenance of the Xiaoheba sandstone in theory, the old current of the Xiaoheba Formation is N-NW. In addition, the authors think that the Xiaoheba Formation belongs to a delta environment, characterized by microfacies delta distribution in the Xiaoheba period. They map the paleo-geography and sandbody thickness isoline in order to provide the basis for finding new natural gas exploration strata.