Microtremor Survey Method: A New Geophysical Method for Dividing Strata and Detecting the Buried Fault Structures
详细信息
- 责任者：Xu Peifen (Key Laboratory of the Study of Earth’s Deep Interior ; Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Beijing 100029 ; China) ; Li Shihao
- 刊名：Acta Petrologica Sinica
- 出版年：2013
- 卷期：29(5)
- 关键词：地震勘探 ; seismic exploration ; 隐伏构造 ; subsurface structure ; 断裂 ; fractures
- 页码：p.1841-1845
- 图表：illus., 2 tables, 18 refs.
- 分类号：1600
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
Microtremor survey as a new geophysical method has become an important technology for dividing strata,detection of basin structure,site selection of geothermal wells and survey of the buried fault structures and geological structures in mining area. The microtremor sounding method is used to detect geological interface with the distinct lithological differences in the error of the depth of about 5% ,such as the lower boundary of the Cenozoic strata,the interface between Jurassic and Permian formations and the top interface of Permian to Carboniferous limestone,and so on. Fault fracture zone and buried fault structures are easy to be identified and interpreted with low velocity anomalies or obvious velocity differences in the apparent velocity profile of S-wave from microtremor survey. 2D microtremor profiling technique has made better geological effects in the detection of buried geological structures ( faults, collapse breccia pipes,etc. ) . This article describes the principles,methods and its applications.
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