TY - RPRT TI - Preliminary Precambrian basement structure map of the continental United States— An interpretation of geologic and aeromagnetic data AU - Paul K. Sims AU - Richard W. Saltus AU - Eric D. Anderson PY - 2005 DO - 10.3133/ofr20051029 UR - https://pubs.usgs.gov/publication/ofr20051029 ID - ofr20051029 ER -