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Coal Mine Basics-Rock and Coal Seam
Release time:
2022-11-22
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Coal Mine Basics-Rock and Coal Seam
Rock and Coal Seam
The material that makes up the earth's outer hard shell is called rock. The earth's crust is mainly composed of rock, which is composed of one mineral or several minerals. Rocks can be divided into magmatic rocks, sedimentary rocks and metamorphic rocks according to different genesis.
Most of the coal resources are buried in sedimentary rocks, and the main characteristics of sedimentary rocks are the existence of layers and fossils. Sedimentary rocks in the process of deposition, due to the time of deposition and sedimentary material composition, color and structure of the different, then in the sedimentary rocks formed a clear layer, these layers are bedding.
The biological remains were deposited together with the sediments, and after tens of thousands of years, the organic substances such as the body shell and bones were gradually exchanged and filled with minerals, and finally became fossils.
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