The process of precipitation of cement between mineral or rock grains and forming solid clastic sedimentary rock, one phase of lithification.
在矿物或岩石的颗粒之间的胶结物沉淀过程，由此形成固态的碎屑沉积岩，为石化作用的一个阶段。
2
Holes and pore space of limestone, heavy rainfall, soil loss, the topography of slope and the destroy on forests imposed by humankind were the main causes of lithification in karst area.