• 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. DLC Includes notes and an Inset: Map showing areas of responsibility of committee members and associated contributors. In lower left margin: 989B. 1 map : col. ; 97 x 128 cm.

    • Contributor: American Association of Petroleum Geologists. Basement Rock Project Committee
    • Original Format: Maps
    • Date: 1967