Abstract

According to the authors, two isolated, elongate, belt-type sandstone deposits of fluvial origin occur about 70 miles apart in the lower member of the Waynesburg Formation (Pennsylvanian and Permian) in the Dunkard basin. On the belief that these areally extensive bodies are lens wedging out in all directions, they propose the name 'Mather Sandstone Lentil' for the body east of Waynesburg, Pa., on the northeast side of the basin, and 'Hockingport Sandstone Lentil' for the body west of Hockingport, Ohio, on the southwest side of the basin. The Mather body consists mainly of coarse-grained sandstone, the Hockingport body of coarse to very coarse sand with pods of conglomerate. On the basis of similarity in composition, the authors believe the detritus was derived from essentially the same source.

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