碳酸盐岩风化成土的交代作用机理:Ⅰ.矿物与微结构证据

Metasomatic Mechanism of Weathering-Pedogenesis of Carbonate Rocks:Ⅰ.Mineralogical and Microtextural Evidence

通过对贵州、广西亚热带岩溶地区碳酸盐岩红色风化壳典型剖面的矿物学与微结构研究 ,从不同研究尺度和剖面不同部位都观察到大量碳酸盐岩风化成土过程中交代作用发育的最直接和最重要的矿物与微结构证据。首次较为系统讨论了碳酸盐岩风化成土的交代作用机理 。

On the basis of mineralogical and microtextural studies of the typical sections of the red weathering crust of carbonate rocks in the subtropical karst areas of Guizhou Province and Guangxi Autonomous Region,we have observed on micro and macroscopical scales and in different positions of the sections,the most direct and most important mineralogical and microtextural evidence for the development of metasomatism in the process of weathering pedogenesis of numerous carbonate rocks.This paper also has expounded systematically for the first time the mechanism of metasomatism involved in the process of weathering pedogenesis of carbonate rocks and proposed the sequence of mineral metasomatic evolution in the process of weathering pedogenesis of carbonate rocks.