• Geology of El Cuervo area, northeastern Chihuahua, Mexico 

    Haenggi, Walter Tiffany, 1933- (2011-06-27)
    The geologic map of El Cuervo area shows distribution of stratigraphic units ranging in age from Jurassic (?) to Recent. Outcropping strata are principally Cretaceous in mountainous areas and Cenozoic in bolson areas. From ...
  • Geology of the Cowboy Pass area, Confusion Range, Millard County, Utah 

    Haenggi, Walter Tiffany, 1933- (2011-06-27)
    Paleozoic, Mesozoic and Cenozoic rocks totaling about 15,000 feet in thickness are exposed in the Cowboy Pass area in the Confusion Range. The Paleozoic sedimentary rocks are carbonates, with small amounts of sandstone and ...