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Humid-type alluvial-fan deposits and associated coal seams in the Lower Cretaceous Haizhou Formation, Fuxin Basin of northeastern China

By
Wu Chonglong
Wu Chonglong
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Li Sitian
Li Sitian
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Cheng Shoutian
Cheng Shoutian
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Published:
January 01, 1992

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.

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GSA Special Papers

Controls on the Distribution and Quality of Cretaceous Coals

Peter J. McCabe
Peter J. McCabe
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Judith Totman Parrish
Judith Totman Parrish
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Geological Society of America
Volume
267
ISBN print:
9780813722672
Publication date:
January 01, 1992

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