云南大型超大型矿床与壳幔界面相关性研究及其预测  

Study on the Correlation of the (Super)Large Scale Deposits With the Crust-mantle Boundary in Yunnan and Its Targeting

作　　者：曹显光 张学书 念红 李雷 

机构地区：[1]云南省有色地质局地质研究所 [2]云南省有色地质局地质勘察院,昆明650051

出　　处：《中国工程科学》2005年第S1期213-217,共5页Strategic Study of CAE

摘　　要：简述了壳幔界面的成矿理论及云南幔坳特征,归纳出4条规律:金属矿床对称地展布在幔坳的两侧斜坡上;云南迄今57个大型矿床的幔距≤20km,其中94·7%≤16km,幔角≤1°;幔角≤0·6°的波台更利于形成超大型矿床;大型矿床与超大型矿床间的关系服从0·618黄金律。预测云南省境内共有大型矿床450个以上,超大型矿床79个以上。The general principles of the theory of mineralization over the crust-mantle boundaries and their basic features have been discussed in this paper. Based on the multiple sources data of the correlation of mantle depression to the metallogenesis, geological characteristics, geochemistry, geophysics and remote sensing signatures, etc., it is concluded that there are types of mineralization regularities on the metallogenesis as follows: 1. Mostly, the metallogenesis occurred symmetrically on both sides of the mantle depression; 2. the mantle distances of all known 57 large scale deposits are less than or equal to 20 km, among these deposits, 94.7% deposits have mantle distances of less than or equal to 16 km, and mantle angles of less than or equal to 1°; 3. the mantle plateau with mantle angle of less than or equal to 0.6° is the most favorable tectonic setting for the super large scale deposits; 4. the spatial distribution relation between the large scale deposits and super large scale deposits has a common law of the so-called “Gold Law' of 0.618. It is concluded based on the mantle depression theory that there are over 450 large scale deposits and 79 super large scale deposits targets for the follow-up prospecting.

关 键 词：壳幔界面成矿 大型矿床 云南 

分 类 号：P611[天文地球—矿床学]