A number of new radiometric ages appear in accompanying articles of this guidebook, but they are not included in this tabulation. In recent years, the Denver geochronology labs of the U.S. Geological Survey have determined 36 radiometricanbsp;...
|Title||:||Land of Cochise|
|Author||:||J. F. Callender, Harold Lloyd James, New Mexico Geological Society, Arizona Geological Society|