The geophysical data collection consists of geophysical data sets that are relevant to Virginia and include seismic lines, basemaps, processed seismic data, magnetic data, aeroradiometric surveys, gravity surveys, etc. This collection covers a variety of seismic studies completed by numerous companies and institutions. Seismic data is stored in the Natural Resources building as paper maps, magnetic tapes, film, and digital files. The geophysical data collection is accessible by appointment with DGMR staff.