Fluid compositions very in different contactmetamorphic processes depending on the fluid source, the features of sedimentary rocks and intrusive rocks.
接触变质过程流体成分有较大差异，主要取决于流体来源、原岩性质和侵入体特征。
2
Impure limestones with interstratified metachert layers where apt to happen fluid rock reactions are excellent for the study of contactmetamorphic fluid.
接触变质流体研究主要集中在含有易于发生流体-岩石反应的不纯碳酸盐岩地区。
3
There is a complete metamorphic series of coal from lignite to meager coal in Wumuchang area, Yimin, the main metamorphism type is contact metamorphism of coal.