Seismic Properties of Typical Rocks in South China

详细信息   

• 责任者：Xu Hai (State Kay Laboratory of Mineral Deposits Research ; School of Earth Sciences and Engineering ; Nanjing University ; Nanjing 210093 ; China) ; Wang Qin
• 刊名：Geological Journal of China Universities
• 出版年：2011
• 卷期：17(3)
• 关键词：弹性波 ; elastic waves ; 波群速度 ; group velocity ; 华南地区 ; South China
• 页码：p.469-478
• 图表：10 illus., 2 tables, 28 refs.
• 分类号：1600
• 出版序号：996
• issnNo：ISSN1006-7493
• isbnNo：CN32-1440/P

摘要

Because the interpretation of seismic data is not unique, seismic properties of typical rock samples from Jiangxi and Fujian Provinces were studied to better explain seismic data in South China in terms of the crustal structure and composition. The P-and S-wave velocities of 5 rock samples were measured using MTS-815 Rock and Concrete Mechanics Test System. The results indicate that seismic velocities of the samples increase with increasing pressure, but decrease with increasing temperature. At the same pressure and room temperature, the P-and S-wave velocities gradually decrease from marbleized limestones, through granodiorites, K-feldspar granites to siltstones. Compared with felsic rocks, the limestones, dolomites and marbles are characterized by high P-wave velocities, and high Vp/VS and poison, s ratios, which provides a way to search carbonate basins beneath the granite regions in South China.