Geology and Ore Deposits of the Uncompahgre (Ouray) Mining District, Southwestern Colorado - Usgs Professional Paper 1753 - Bog af Wilbur S Burbank -

Geology and Ore Deposits of the Uncompahgre (Ouray) Mining District, Southwestern Colorado - Usgs Professional Paper 1753 - Wilbur S Burbank

The Uncompahgre mining district, part of the Ouray mining district, includes an area of about 15 mi2 on the northwestern flank of the San Juan Mountains in southwestern Colorado from which ores of gold, silver, copper, lead, and zinc have had a gross value of $14 to 15 million. Bedrock within the district ranges in age from Proterozoic to Cenozoic. At least three major uplifts of the ancestral San Juan Mountains occurred during the Proterozoic and at the close of the Paleozoic and Mesozoic, respectively...