U.S. Geological Survey Geologic Investigations Series I-2799

Photographs

Early Tuff Sheets

   

La Garita Caldera Cycle (27.6 Ma)

       

           

Bachelor Caldera Cycle (27.3 Ma)

           

   

Blue Creek and South River Caldera Cycle (27.2-27.1 Ma)

   

San Luis Caldera Complex (27.0-26.8 Ma)

           

   

Creede Caldera Cycle (26.7 Ma)

       

Miocene Basalt and Rhyolite of Hinsdale Formation

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