• Map
    Digital aeromagnetic datasets for the conterminous United States and Hawaii a companion to the North American magnetic anomaly map /
    Companion to the North American magnetic anomaly map Catalog Record - Electronic Resource Available
    System requirements: IBM PC or compatible computers running Windows 98/NT/2000; or, Macintosh; Internet Explorer 5.0 or Netscape 7.0 or higher; DVD-ROM drive. Title from disc label. Also available via Internet from the USGS Web site. Address as of 9/08/04: http://pubs.usgs.gov/of/2002/ofr-02-361/; current access available via PURL.
    • Contributor: Geological Survey (U.S.)
    • Date: 2003
  • Map
    Basement map of North America between latitudes 24° and 60° N
    Basement map of North America between latitudes 24° and 60° North
    Available also through the Library of Congress Web site as a raster image. Depths shown by contours. Sectioned in 4, torn in half along vertical fold, and mounted on cloth. Includes notes and an Inset: Map showing areas of responsibility of committee members and associated contributors. In lower left margin: 989B.
    • Contributor: American Association of Petroleum Geologists. Basement Rock Project Committee - Geological Survey (U.S.)
    • Date: 1967