Stratigraphic relationships of Upper Devonian-Lower Mississippian subsurface and outcrop strata in northern West Virginia indicate that two basement structures influenced the deposition of the Catskill and Price-Rockwell delta complexes. These structures are herein named the "Harrison fault zone" and the "Barbour fault zone."

The Harrison fault zone trends north-south through north-central West Virginia and is recognized by the stacking arrangement of shoreline and marine sandstones and by trends of rapid interval thickening of shelf deposits. The trend and sense of movement indicated by these features is consistent with that expected for Cambrian-age basement normal faults along the eastern margin of the Rome trough.

The Barbour fault zone is a cross-strike feature recognized by the vertical stacking of Hampshire Group fluvial sandstones, facies relationships within the Price Formation, and the configuration of the sub-Greenbrier Lime-stone unconformity. The Barbour fault zone marks the northern edge of the West Virginia dome.

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