Basement Structure of Southeastern Boundary Region of Sichuanyunnan Active Block: Analysis Result of Yanyuan—Xichang-Zhaojue—Mahu Deep Seismic Sounding Profile
详细信息
- 责任者：Yang Zhuoxin (Geophysical Exploration Center ; China Earthquake Administration ; Zhengzhou 450002 ; China) ; Wang Fuyun
- 刊名：Acta Seismologica Sinica
- 出版年：2011
- 卷期：33(4)
- 关键词：基底构造 ; basement tectonics ; 深地震测深 ; deep seismic sounding ; 四川 ; Sichuan Province ; 云南 ; Yunnan Province
- 页码：p.431-442
- 图表：illus., 30 refs.
- 分类号：0300
- issnNo：ISSN0253-3782
- isbnNo：CN11-2021/P
摘要
Yanyuan—Xichang—Zhaojue—Mahu wide-angle reflection/refraction deep seismic profile has been completed in the southeastern boundary region of Sichuan-Yunnan active block.The images of P-wave velocity structure and the basement interface along the profile are obtained by interpreting the arrival times of refracted Pg wave and using finite difference inversion and time-term inversion.The result shows that the basement structure is significantly inhomogeneous and different tectonic zones reveal different deformation features.