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A STUDY OF LAND PLATE AND SIGNIFICANCE OF PROSPECTING FOR MINERAL DEPOSITS

Yang Fuxin ( The Institude No.203, Bureau of Northwest Geology and Exploration, General Company of Nuclear Industry, China )  
The studied contents in this paper are continental plate. According to the features of motive force when continental lithosphere and continental plates are formed, the author suggested a new view that the continental plates are divided by the paleo-basement structure.He advocates that the attention to elevation and subsidence movement during the force-even inversion and to relationship between the new and the old plates should be paid while studying the horizontal movement of the plates.In guiding to prospecting,he insists on the view of mobile theory. It is used as the theory model of prospecting for mineral deposits in terms of the transformed removal role of the useful elements among the boundaries of the different plates. According to the features inside the plates, they may be divided into four classes the first class is continental plate,the second land plate,the third subland plate ( subplate ) and the fourth miniland plate ( miniplate ) .Each class may be divided into such structure unites as plate bodies and plate sections. On the basis of the preliminary study of the land plates in China, the author found that in the east part there are mainly the land plates of the mobile type, in the west part there are mainly the land plates of the stable type and in the middle there are mainly the land plates of the sub-stable type. The different kinds of mineral deposits are controlled by the different land-plate types.Many uranium deposits occurred in the land plates of various ages in China, and they are controlled by the features among the specific plate boundaries and the near areas. In the light of these laws and the features of the controlled mineralization, the prospecting experiments were made, and the better effects were achieved.It is demonstrated that the detailed divisions of the land plates and applying this theoty for prospecting are of important value to both theory and practice.
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