摘要
表生作用是大气与地球岩石圈表面的相互作用,其作用结果受气候、地形地貌、元素自身地球化学行为、基岩岩性等多种因素制约。查明表生地球化学作用特点,对于正确圈定成矿远景区或靶区,阐明基岩元素时空变化规律有重要意义。广西地处亚热带一热带,炎热多雨和低山丘陵地形,非常有利于岩石风化淋滤。根据基岩类别可将广西大致划分为碳酸盐岩地球化学景观区。
The results of geochemistry of hypergenesis conld be shown by an accumulation coefficient AC.When AC>1 shown secondary enrichment,whereas AC<1 shown secondary impoverishment.The practice of geochemical prospecting shown that weathering crust of carbonat rocks in subtropical zone,the secondary enrichment of majority of metallic elements are very pronounced.In this paper,some regularities and applications for prospecting were approched.
出处
《广西地质》
1996年第1期191-200,共10页
Guangxi Geology
关键词
广西
表生作用
地球化学
成矿
Geochemistry of Hypergenesis Subtropical Zone Accumulation Coefficient Lateritic Weathering Crust
