| 藏东地区新生代构造体系与成矿的关系 |
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| 关键词:eastern Tibet Cenozoic tectonic regime mineralization |
| 基金项目:国家自然科学基金项目(49962001)，国土资源部地质大调查项目(199910201890003) |
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| The Relationship betwwen Cenozioc Tectonic Regime and Mineralization in Eastern Tibet |
| The research on the tectonics and the structures shows that the tectonic stress field of eastern Tibet varied from NE-SW compression to NNE-SSW compreso-shearing,which finds expression in four respects:①the foramation of a large scale dextral strike-shearing system along the east and west sides of Changdu block as well as the preexistent large deep-faults,and the development of intensive cataclasis,stretching lineations and theca-folds;②the superimposition of a series of echelon sub-folds and sub-shear faults on both sides of the strike-slip faults;③the formation of a series of echelon stike-slip basins;④the regular distribution of Cenozoic magmatism along both sides of the strike-slip faults.The Cenozoic tectonic regime transformation resulted in a large scale translation and enrichment of ore-bearing fluids,which made Cenozoic an important mineralization period.The northern part of Lancangjiang fault,Tuoba fault,Wenquan fault and the northern part of Chesuoxiang fault were all favorable areas for ore enrichment in this period. |
| TAN Fu-wen,WANG Gao-ming,HUI Lan,WANG Ming-jie,LI Zhong-xiong,WANG Xiao-long.2001.The Relationship betwwen Cenozioc Tectonic Regime and Mineralization in Eastern Tibet[J].Acta Geoscientica Sinica,22(2):123-128. |
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