They can be divided into low sulphidation and high sulphidation types, with typical wallrockalteration and alteration zonation of epithermal de-posit.
这些矿床可分为高硫化型和低硫化型，且都具有典型的围岩蚀变、蚀变分带等矿床特征。
2
The magmatic evolutionary series shows a general trend of evolution from high to low basicity of magma, from great to shallow depths of magmatic intrusion and from strong to weak wall-rockalteration.
岩浆演化序列表现出岩浆基性程度由高变低、侵入深度由深变浅、围岩蚀变由强变弱的总体演化趋势。
3
The main purpose of this paper is to introduce a new method to study the immobile elements and mass transport of in geochemical process of wall-rockalteration.