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Geologic and Radiometric Reconnaissance Along the San Juan and Colorado Rivers Between Mexican Hat, Utah, and Lees Ferry Arizona (open access)

Geologic and Radiometric Reconnaissance Along the San Juan and Colorado Rivers Between Mexican Hat, Utah, and Lees Ferry Arizona

Abstract: Ten days were spent during June 1955, examining the sedimentary rocks along the San Juan and Colorado Rivers between Mexican Hat, Utah, and Lee's Ferry, Arizona. The most favorable area for uranium deposits occurs in the Shinarump member of the Chinle formation between Clay Hills Crossing and Spencer Camp along the San Juan River. Mineralization is spotty and deposits are small and almost all below ore-grade. Only one small mine, the Whirlwind, is currently producing ore. Gray-green alteration of the underlying Moenkopi is moderately developed in the vicinity of the Whirlwind mine; elsewhere alteration is weakly developed.
Date: October 13, 1955
Creator: Dahl, Harry M.
System: The UNT Digital Library
Geologic Reconnaissance of the Southwest Flank of the Zuni Uplift, New Mexico (open access)

Geologic Reconnaissance of the Southwest Flank of the Zuni Uplift, New Mexico

Report presenting the results of a survey in the southwest segment of the Zuni Uplift sedimentary formations. The report includes figures and plates that provide an overview of physical geography in the area, as well as economic geography, including mineral deposits.
Date: August 1955
Creator: Konigsmark, Ted
System: The UNT Digital Library
Geologic Reconnaissance of the Southwest Flank of the Zuni Uplift, New Mexico (open access)

Geologic Reconnaissance of the Southwest Flank of the Zuni Uplift, New Mexico

Results of a survey in the southwest segment of the Zuni Uplift sedimentary formations. It includes an overview of physical geography in the area, as well as economic geography, including mineral deposits.
Date: August 1955
Creator: Konigsmark, Ted A.
System: The UNT Digital Library