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。
Texture of sedimentary rock: clastic texture and nonclastic texture.
沉积岩的结构：碎屑结构和非碎屑结构。
The intermediate-acid pyro-clastic rock is dominant with a few of intermediate lava and common sedimentary pyroclastic rocks formed in the volcanic intermittent activities in the Qidaogou area.
秋皮沟一带分布一套以中酸性火山碎屑岩为主，夹少量中性熔岩及火山间歇期正常沉积的秋皮沟火山碎屑岩；
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