| This dissertation is supported by INDEPTH Project, aimed at the three electromagnetism profile of eastern Kunlun Fault zone, which are Line 600, Line 2100 and Line 6000. The dissertation applies advanced MT data processing technology and 2D inversion software to invert and deal with the actual measurement, and researches the structure of shell and mental, local tectonic and deep material status in eastern Kunlun Fault zone in terms of electrical conductivity.The result of electromagnetism data's tensor analysis shows that the North Tibet plateau region is a 2D tectonic, the electrical axis's direction in most of the region is[110°,20°], those of few of the local stations are [120°,30°], and those of North Qiangtang area are [150°,60°]. The conclusion that the total structure's tend of the research region is about NE110°and that of North Qiangtang is about [150°,60°], could be got by comparing the geology data in that region. The electrical structure model of North Tibet got from 2D inversion shows that: the electrical grad area and distortion area which lay 150km subsurface fits the fault zone delineated by the geology data, and it could reflect the depth feature of the fracture tectonic zone .The electrical conductivity structure of the research area could be divided into 3 layers, Whose burial depths are similar with the interfaces among upper crustal, lower crustal and lithosphere. The electrical conductivity of upper crustal is mainly high resistive except Qaidam Basin, yet there are some dispersed high conductive partly. in Qiangtang Block, Qaidam Basin and the eastern of eastern Kunlun fault zones, the electrical conductivity is high resistive, yet in the north Qiangtang Block and west of eastern Kunlun faults zone is high conductive, which is arrive into the upper mantle.On the other hand, the thickness of crustal in the different Block is varying: in the Qiangtang block the upper crustal is much thicker than others, while in lower crustal is much thinner; the middle-lower crustal is much thicker relatively in the north Bayan Kara block and eastern Kunlun fault zones; although the thickness of crustal is 35~40Km, the buried depth of Moho is 40~55Km caused by almost 10 kilometers of the high conductive in the near-surface. In general, the crustal in the North Tibet plateau area is much thicker than any other areas.In the research region there exist a S-N-trending high conductive layer but hardly any higher heat discharges. This phenomenon is perhaps result from the brine existing in the pores of basalt in the pristine oceanic crust and marine sedimentary rock mass, which run out from the rock mass by compressional stress caused by plate movement. In addition, the scale and thickness of high conductive layer is different between western and eastern Kunlun fault zones. It is lager and thicker in eastern area, which reflects that it is possible that the plateau matters, perhaps plastic mid-lower crust, move eastwards, and the Mid-Kunlun fault must be the channels. Qiangtang block is divided into south and north Qiangtang byGangmari-Chasang fault. The sedimentary layer and electrical axis azimuth angle are both different in these two parts: south Qiangtang is NE110°and high resistive below crust, but north Qiangtang is NE150°and high conductive.
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