... 造气显微组分：gas-generating maceral 造煤相：coal-forming facies 造陆运动;大陆扩展运动：geocratic movement ...
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coal forming by continental facies 陆成煤
·2,447,543篇论文数据，部分数据来源于NoteExpress
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。
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