Research Of Electrical Structure And Dynamics Of Gangdise Block On South Tibet

Modern earth sciences core of the problem is the problem of Continental Dynamics,which mainly involves the lithosphere of the Earth’s physical properties of the variousspheres of questions to the lithospheric structure and lithosphere invisible state based.Qinghai-Tibet Plateau in southwest China, is a typical area of modern continental collision,has a complex crust, mantle structure and contact relationships. Therefore, the TibetanPlateau uplift and subduction of the Indian relations, the role of the state between the twoplates, plate internal state, the role of the Tibetan Plateau in the consolidated whether theshortening and thickening produced so far are very controversial topic academia.First, combing through a large number of domestic and international literature onsouthern Tibet Geology and Geophysics, summarizing current research found that the currentblock on the north-south trending faults Gandise geophysical few studies. Therefore, southernTibet Gangdise blocks south trending faults research has important research value.Then, the electromagnetic field theory and the basic theory of the earth as the theoreticalbasis, a brief introduction to the main methods used Institute of principles and applications ofsteps, including magnetotelluric field data collection, data processing, data inversion process.Meanwhile, the introduction southern Tibet Lhasa-Gangdise plate background, mainlystudied five north-south trending faults geological and geophysical instructions.Secondly, the paper uses the latest deep special (Sinoprobe) net cross sectional standardmethods of observation, through the current latest magnetotelluric data processing methods-remote reference technique nonlinear conjugate gradient method for southern Tibetmagnetotelluric data processing and anti-play work.Obtained by inverting the mostreasonable geoelectric model, a detailed analysis of southern Tibet Gangdise-Lhasa area ofnorth-south trending faults deep electrical structure, resulting geophysical inversion modelexplains geology and geophysics to explore Several southern Tibet near the north-southtrending normal faults plate formation mechanism and the Tibetan Plateau evolution, andexplains its significance to continental dynamics.Finally, the paper concludes by studying the analysis: First, melt the crust on the electrical structure exhibits high conductivity or resistivity characteristics, widely found insouthern Tibet and parts of the upper crust upper mantle; trending faults in the north andsouth parts of upwelling beneath out of the surface. Second, the subduction of the Indianplate-Southern Tibet crust produce "delamination"-hot mantle upwelling, while generatingnearly NS tectonic rift-crust melt-melt on the Bay, heated and driven groundwatersystem-geothermal intense tectonic activity in the area of water in the broken rock zoneerupted to the surface.