广西晚二叠世成煤模式探讨

广西晚二叠世成煤模式划分为“两类三型”,即泥炭沼泽成煤模式和泥炭坪成煤模式两类,沼泽型、潮坪型和泥炭坪型等三型。文章阐述了这些成煤模式在吴家坪期和长兴期形成的特征,分布状况,以及代表煤层,指出潮坪型是广西晚二叠世时期最主要的成煤模式。

DISCUSSION ON COAL-FORMING MODELS IN LATE PERMIAN EPOCH IN GUANGXI

The coal-forming models in late permian eporch in Guangxi are divided into "two classes and three types", the two classes are peat bog coal-forming model and peat flat coal-forming model, the three types are bog type, tidal flat type and peat flat type coal-forming models. This paper deals wiht the forming characteristics of these coal- forming models, their spacial distribution conditions and typical coal layers in Wujiapin age and Changxing age, it points out that the tidal flat type was the most typical coal-forming model in late permian epoch in Guangxi.