| 摘要: |
| 近年来，随着地质调查工作的进展，在位于雅鲁藏布结合带与班公湖一怒江结合带之间的冈底斯构造-岩浆带内，新发现了一批矽卡岩型铁、铜、金、铅锌矿床，构成规模宏大的矽卡岩型成矿带。矽卡岩型矿床的含矿地层岩石为石炭系-二叠系、侏罗系和白垩系的灰岩、白云质灰岩和砂岩；有关的侵入岩主要是燕山期-喜马拉雅期的花岗岩、花岗闪长岩及其浅成相侵入体，多数为小-中型的岩株，一般具斑状结构。冈底斯成矿带的矽卡岩型矿床与长江中下游的铁铜金矽卡岩型矿床在许多方面可以相比较。冈底斯地区具有巨大的找矿潜力，有望成为中国新的富铜富铁资源基地。 |
| 关键词: 冈底斯 铁、铜、金、铅、锌 矽卡岩型矿床 资源潜力 |
| DOI： |
| 分类号:P618.4 |
| 基金项目:中国地质调查局《雅鲁藏布江成矿区重大找矿疑难问题研究》项目(编号:200310200008)部分成果。 |
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| Ore potential of skarn-type ore deposits in the Gangdise metallogenic belt, Tibet |
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WANG Fangguo1,LI Guangming1,LIN Fangcheng1,21. Chengdu Institute of Geology and Mineral Resources,Chengdu 610082,Sichuan,China,2. Geoscience College,Chengdu University of Technology,Chengdu 610059,Sichuan,China
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| Abstract: |
| In recent years, with the progress in geologic investigation a number of skarn-type Fe-Cu-Pb-Zn deposits have been discovered in the Gangdise tectonomagmatic belt between the Yarlung Zangbo juncture and the Bangong Co-Nujiang juncture. They form a gigantic skarn-type metallogenic belt. The country rocks of the deposits are Carboniferous-Permian, Jurassic and Cretaceous limestone, dolomitic limestone and sandstone, and related intrusive rocks are Yanshanian-Himalayan granite and granodiorite and their hypabyssal equivalents. The intrusions commonly occur as small and medium-sized stocks and usually have a porphyritic texture. The skarn deposits in the Gangdise metallogenic belt are comparable to Fe-Cu-Au skarn deposits in the middle and lower Yangtze Valley metallogenic belt in many aspects. The Gangdise area has great ore potential and shows promise as a new Fe-Cu-Pb-Zn resource base of China in the near future. |
| Key words: Fe-Cu-Au-Pb-Zn,skarn ore deposits,ore potential,Gangdise |
