Suggested citation and version history for:  


  Garrity, C.P., and Soller, D.R., 2009, Database of the 
       Geologic Map of North America; adapted from the map 
       by J.C. Reed, Jr. and others (2005): U.S. Geological 
       Survey Data Series 424 
       [http://pubs.usgs.gov/ds/424/].


  Version 1.0

  July 8, 2010
  Improved contact-info link

  July 2009
  Released on CD-ROM

  June 1, 2009
  Initial release online at
  http://pubs.usgs.gov/ds/424/