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Pottsville Formation (upper part)

Pottsville Formation (upper part) - Interbedded dark-gray shale, siltstone, medium-gray sandstone, and coal in cyclic sequences. The members present in the Cahaba synclinorium in descending order include: the Straven Conglomerate Member, Rocky Ridge Sandstone Member, and Chestnut Sandstone Member. The members present in the Coosa synclinorium in descending order include: Straight Ridge Sandstone Member and Wolf Ridge Sandstone Member.
StateAlabama
NamePottsville Formation (upper part)
Geologic agePennsylvanian
Original map labelPpv2u
Primary rock typeshale
Secondary rock typesiltstone
Other rock typessandstone; coal
Lithologic constituents
Map references
Szabo, M. W., Osborne, E. W., Copeland, C. W. Jr., Neathery; T. L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000.
Unit references
Szabo, M. W., Osborne, E. W., Copeland, C. W. Jr., Neathery; T. L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000.
Geographic coverageBibb - Calhoun - Jefferson - Saint Clair - Shelby

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URL: http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=ALPApv2u;4
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