Humid-type alluvial-fan deposits and associated coal seams in the Lower Cretaceous Haizhou Formation, Fuxin Basin of northeastern China
Wu Chonglong, Li Sitian, Cheng Shoutian, 1992. "Humid-type alluvial-fan deposits and associated coal seams in the Lower Cretaceous Haizhou Formation, Fuxin Basin of northeastern China", Controls on the Distribution and Quality of Cretaceous Coals, Peter J. McCabe, Judith Totman Parrish
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The Lower Cretaceous Haizhou Formation in the Fuxin basin is mainly alluvial fan deposits and coal seams. Debris-flow deposits are well developed in the alluvial-fan strata. Almost all the fan deposits closely interfinger with coal seams. The alluvial-fan deposits gradually thin and wedge out from the basin margin towards the basin axis. By contrast, the coal seams split and pinch out from the basin axis to the margin. The lateral interfingering of coals with shallow-water gravity-flow deposits indicates that peat accumulation was essentially coeval with the development of alluvial fans. Coal seams may have accumulated as hypautochthonous or allochthonous peat in shallow lakes or depressions in the distal-fan regions.