论文部分内容阅读
本文论述海南岛北部早更新世玄武岩上发育的两类红土风化壳的矿物成分及其形成机理。文章首先叙述了不同风化带矿物成分的特点,然后在研究风化岩石显微组构特征的基础上,探讨了微区的三个主要物理化学过程(假象交代、溶蚀和淀积作用)以及微区水动力条件对这些过程的影响。最后提出了本区玄武岩红土化过程中的矿物风化序列。
This paper deals with the mineral composition and formation mechanism of two types of laterite weathering crusts developed on the Early Pleistocene basalts in northern Hainan Island. The article first describes the characteristics of mineral components in different weathering zones. Based on the study of the microstructures of weathered rocks, three main physicochemical processes (artifact replacement, dissolution and deposition) and micro-zones The impact of hydrodynamic conditions on these processes. At last, we put forward the mineralization sequence of the basalt in the area.