Qianceng stone is a kind of sedimentary rock, its texture into layered structure, in between layer and layer a layer of light grey rocks, stone into horizontal, one and weathered erosion of rock.

是沉积岩的一种，其纹理成层状结构，在层与层之间夹一层浅灰岩石，石纹成横向，外形似久经风雨侵蚀的岩层。

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Key points: texture, structure and classification of sedimentary rocks.

重点：沉积岩的结构、构造和分类。

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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。

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