Late Mesozoic and Cenozoic stratigraphic and structural framework near Hopewell, Virginia

In the Atlantic Coastal Plain near Hopewell, V a, detailed data acquired by mapping and power augering define a north-striking, east-dipping zone of reverse faults, the Dutch Gap fault zone, extending at least 13 km from the southern boundary of the Hopewell 7 1/2-min quadrangle north to the James River. The fault wne parallels the northward reach of the Appomattox River from Petersburg to Point of Rocks. As much as 20 m of vertical displacement has been recognized on the contact between the Potomac Formation (Cretaceous) and the Aquia Formation (Paleocene). Younger Tertiary units appear to be displaced less than the Paleocene sediments.