Application Of Multiple Geophysical Methods To Hydrologic And Environmental Investigations At U.S. Marine Corps Installations In North Carolina

Abstract

Hydrologic information for ongoing environmental studies at two U.S. Marine Corps Bases in the Coastal Plain Province of North Carolina was obtained by using a combination of high-resolution land seismic reflection, continuous marine seismic profiling, and borehole geophysics, that included vertical seismic profiling. The geometry of areas of missing confining units at the southern end of Cherry Point Marine Corps Air Station was mapped by using land seismic-reflection compressional (P) waves, marine seismic profiling, and borehole-geophysical and lithologic data from more than 100 water-supply and monitoring wells. The hydrogeologic framework at Camp Lejeune was mapped by using 100 miles of continuous single-channel, marine seismic-profiling data that were correlated with land-based borehole geophysical and lithologic data from 180 water-supply, monitoring, and stratigraphic test wells. These data are being used by both Marine Corps Bases to manage drinking-water supplies and plan investigations of hazardous-waste sites.