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陆源沉积岩是由各类母岩的机械破碎产物—陆源碎屑物质、经过搬运、沉积、成岩等一系列作用而形成的沉积岩。陆源沉积岩按其陆源碎屑组分粒径的大小可分为:砾岩和角砾岩砂岩、粉砂岩、泥质岩(粘土岩)。陆源沉积岩在自然界中分布广泛,约占沉积岩总量的75%以上,也是在含煤岩系中最常见的岩石,在某些陆相含煤岩系中:陆源沉积岩常可占岩石的90%以上。因此,对于陆源沉积岩的分类进行较为深入的探讨是完全必要的。这不仅对于含煤岩系的研究具有重要的理论意义,并且对于煤田普查,勘探及矿井地质工作都具有一定的实际意义。
The terrigenous sedimentary rock is a sedimentary rock formed by a series of functions of transportation, sedimentation and diagenesis, which are mechanical crushing products of all kinds of parent rocks - terrigenous clastic material. The terrigenous sedimentary rocks can be divided into conglomerate and breccia sandstone, siltstone and argillaceous rock (clay rock) according to the size of their terrestrial clastic component. Terrigenous sedimentary rocks are widely distributed in nature, accounting for more than 75% of the total sedimentary rocks, and are also the most common rocks in coal-bearing rock series. In some terrestrial coal-bearing rock series, terrigenous sedimentary rocks can often account for 90% the above. Therefore, a more in-depth discussion of the classification of terrigenous sedimentary rocks is absolutely necessary. This not only has important theoretical significance for the study of coal-bearing rock series, but also has certain practical significance for coalfield census, exploration and mine geological work.