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  • Map

    Basement map of North America between latitudes 24° and 60° N

    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
  • Map

    Digital aeromagnetic datasets for the conterminous United States and Hawaii a 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:; current access available via PURL.

    • Contributor: Geological Survey (u.s.)
    • Date: 2003