Multi-Size Quantitative Remote Sensing on the Directional Characters of Fault Structures Fashion of Guposhan Granite Body
详细信息
- 责任者：Wu Hong (College of Earth Sciences ; Key Laboratory of Geological Engineering Centre of Guangxi ; Guilin University of Technology ; Guilin 541004 ; China) ; Feng Zuohai
- 刊名：Journal of Guilin University of Technology
- 出版年：2011
- 卷期：31(3)
- 关键词：构造样式 ; tectonic style ; 遥感 ; remote sensing ; 花岗岩 ; granite ; 广西 ; Guangxi Province
- 页码：p.319-327
- 图表：4 illus., 19 refs.
- 分类号：1600
- 出版序号：220
- issnNo：ISSN1674-9057
- isbnNo：CN45-1375/N
摘要
The fault structure system of Guposhan granite body is possessed from a structure fashion of complex combination as the serried radial faults insert into the ring structures of multiple layers each other so that their distribution of the density in length is different in the light of the azimuth interval.By decomposing and extracting the linear structures in the four directions of trend of SN,NE,NW and EW respectively,which are from the remote sensing image of three satellites(Resource-2 of China,Aster of Japan and ETM+of USA) with the size of spatial solutions,2 513 linear structures are got in the four directions and 1 997.76 km in length through interpreting multi-size quantitative remote sensing images from China’s Resource 2,Japan’s Aster and ETM+of USA for investigating the directional distribution characteristic of these structures.Based on all above,the quantitative remote sensing analysis is completed for the remote sensing linear structures(directional density slice,directional trend analysis and 3D digital model).By choosing the tenth power trend surface of the density image of the fault structures as a simulation for distribution of density of the true fault structures,the relations between the density distribution in every strikes and fault tensile stress are discussed.It shows that the high density areas of the faults distribute around the granite body in unsymmetrical ringlike.The range of the high strength and the density is located in the southeast part of the granite body.The sequencing of dominant directions of the fault structures in Guposhan granite body is as following: the first is NE,ascendentest;the second is NW,ascendent;the third is EW;weak ascendent is the fourth,SN,inferior.There is an orthogonal relation between the direction of the fault tensile stress and the trend of the fault structure in the granite body,presenting respectively directions of trend vector in EW,NW,NE and SN.These characteristics provide a powerful proof for deciding the forcing environment during this granite rock-forming.