1992 · 12 citations · 0 references
Natural SciencesEarth SciencesGeophysicsCrustal GeophysicsSeismologyTectonicsCrustal DeformationCrustal SeismologyCrustal StructureFault Zone SeismologySeismic ImagingCrustal Structure MappingCrustal Thickness EstimationCrustal Thickness VariationsCrustal Velocity StructureExplosion SeismicityUpper Mantle ImagingVelocity DistributionVelocity Distribution Functions
In this paper, according to the explosion seismic data obtained from a combinative geophysical survey on Pan-Xi region by Institute of geophysics, Academia, Sinica in 1984, the crustal structure and velocity distribution along Xichang-Dukou-Muding profile was imaged by 2-D raytracing method. The results show hat crustal average velocity is 6.25km/s, the thickness is 55km, but between Yongren and Dukou region, the crustal thickness is only 52km and upper mantle has a uplift tendency. At the same time a shallow structure indicate clearly that there exist faults and basins in the study region. Finally, combination with geotectonic evolution and minerals distribution law, a further discussion was conducted.