【作者】 郑建昌； 刘元龙；

【Author】 Zheng Jianchang Liu Yuanlong (Institute of Geophysics,Chinese Academy of Sciences)

【机构】 中国科学院地球物理研究所；

【摘要】 本文根据地震测深资料求得华南地区深部重力异常与壳幔密度差之间的统计关系曲线,给出了华南地区地壳构造图,得出华南地区地壳厚度在29—39km范围内。研究表明,地幔坳陷区及地壳厚度陡变带与钨、锡等矿成矿区相对应,地幔上隆区与金矿区相对应。指出华南地区2个主要钨锡矿成矿区和成矿带及8个成矿远景区、8个金矿成矿区和5个成矿远景区。更多还原

【Abstract】 In this paper,according to seismic sounding data,we have presented the statistical curve between deep—seated gravity anomaly and density difference between crust and mantle.Map of the crustal structure of the Southern China have been given.It is shown that variation of crustal thickness is from 29 to 39 km.The results have been shown as follows:(1) depression areas of the upper mantle and zone of sharp change of the Moho correspond to tungsten-tin ore districts. (2) uplifts of the mantle correspond to gold ore districts.(3) there are two major tungsten-tin ore districts and zones,eight promising areas,eight major gold ore districts and five promising areas in the Southern China.更多还原