Determination of Fracture’s Development Periods of T3-J Formation in the North of Chuxiong Basin of Yunnan Province, China

详细信息   

• 责任者：Zhou Wen (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Zhang Yinde
• 刊名：Journal of Chengdu University of Technology
• 出版年：2008
• 卷期：35(2)
• 关键词：裂隙 ; cracks ; 云南 ; Yunnan
• 页码：p.121-126
• 图表：6 illus., 3 tables, 7 refs.
• 分类号：0300
• issnNo：ISSN1671-9727
• isbnNo：CN51-1634/N

摘要

The T-J Formation of Chuxiong Basin have gone through many complex tectonic movements, and the fracture’s development periods are complex. According to ground fracture’s investigation and samples’ test, the authors use four methods to determine the fracture’s development periods. Four pairs of natural fractures are watched by field ground facture investigation. Acoustic emission experiment proves that there are at least four structure stress breakup phases in the researched area and the complex course of tectonic stress is NE, but the stress field changes to SE in the Himalaya period. And later the Himalaya period movement becomes the main breakup period with strengthened stress.