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本区属新生式地洼亚型煤田,大地构造发展经历了地槽、地台和地洼三个阶段。 沉积建造属地洼阶段初动期的海陆交互相沉积。根据它的地质时代,划分为上三叠统含煤建造和中下侏罗统碎屑岩建造。 含煤建造中的碎屑岩含量为百分之六十四(其中砾岩8％),粘土岩含量为百分之三十六,含有可采和局部可采煤层九层,碎屑岩建造中的碎屑岩含量为百分之八十五,粘土岩含量只百分之十五,仅有二至三层极薄煤层或煤线。 地洼阶段激烈期的岩浆侵入或喷出于本区和外围,它们的活动顺序与陈国达教授所指出的地洼区岩浆活动一般顺序完全相符。与此同时,本区被断裂所切割,经长期风化剥蚀形成今日所见的单斜构造,它以块状断裂发育为特色。
The area is a new born depression sub-type coalfield, the earth structure has experienced the development of the trough, platform and ground depression in three stages. Sedimentary and sedimentary facies deposits in the initial stage of marine-land facies deposition. According to its geological age, it is divided into Upper Triassic coal-bearing construction and Middle-Lower Jurassic clastic rock formation. In the coal-bearing construction, the content of clastic rocks is 64% (of which conglomerate is 8%), and the content of clay rock is 36%. There are 9 layers of recoverable and locally recoverable coal seams, clastic rocks The content of clastic rocks under construction is 85%, clay rock content is only 15%, and there are only two to three very thin coal seams or coal lines. During the intense period of Diwa stage, magma invaded or erupted in this area and its periphery, and their sequence of activities exactly matched the general order of magmatic activities in the Diwak area pointed out by Professor Chen Guoda. At the same time, the area was cut by faults and formed monoclinic structures that are seen today by long-term weathering and denudation that characterize massive faulting.