The early Middle Jurassic was an major coal-forming period in the region, when the Lower Yaopo Formation of lacustrine-deltaic and swamp facies was deposited.
中侏罗世早期是全区重要的成煤期，下窑坡组为湖泊—三角洲及沼泽相。
A two-dimentional, time-dependent numerical model is developed to simulate the formation, evolution and dissipation of advection-radiation fogs within the shallow-water swamp—land area (SWSLA).
建立了一个二维时变数值模式，模拟了浅水湖沼—陆面地区平流辐射雾形成、演变和消散的基本过程。
Sediments in basins consist of grey coal-bearing formation composed of fluvial alluvial, proluvial fac ies, lacustrine-swamp facies. The material composition of sedim…
沉积物组成了山区河流冲洪积相、湖沼相的灰色含煤建造，其物质成分与基底岩石具明显继承性。
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