Geologic map of the Ponca quadrangle, Newton, Boone, and Carroll Counties, Arkansas

This digital geologic map compilation presents new polygon
(i.e., geologic map unit contacts), line (i.e., fault, fold
axis, and structure contour), and point (i.e., structural
attitude, contact elevations) vector data for the Ponca 7 1/2'
quadrangle in northern Arkansas. The map database, which is at
1:24,000-scale resolution, provides geologic coverage of an
area of current hydrogeologic, tectonic, and stratigraphic
interest. The Ponca quadrangle is located in Newton, Boone,
and Carroll Counties about 20 km southwest of the town of
Harrison. The map area is underlain by sedimentary rocks of
Ordovician, Mississippian, and Pennsylvanian age that were
mildly deformed by a series of normal and strike-slip faults and
folds. The area is representative of the stratigraphic and
structural setting of the southern Ozark Dome. The Ponca
quadrangle map provides new geologic information for better
understanding groundwater flow paths and development of karst
features in and adjacent to the Buffalo River watershed.