Geophysical maps and interpretations of the Domeland Wilderness and contiguous Roadless Areas, Kern and Tulare counties, California

Geophysical maps were compiled and constructed from gravity and aeromagnetic surveys of the study area in order to assist the geologic mapping and the mineral resource assessment of the Domeland Wilderness and contiguous roadless areas. The isostatic residual gravity map (fig. 1) primarily reflects lateral density variations within the upper crust beneath the region studied. The aeromagnetic map reflects the distribution of magnetization in the underlying rocks. Because different rock types are often characterized by different densities and magnetic properties, the geophysical maps can be used to extend the geologic mapping into areas covered by surficial deposits and to help determine the subsurface locations and attitudes of contacts between rock units with contrasting properties.