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U.S. Geological Survey Scientific Investigations Map 3123



Volcano Hazards Program Home Page  - U.S. Geological Survey

Geologic Map of the Central San Juan Caldera Cluster, Southwestern Colorado - USGS Geologic Investigations Series I-2799

Chemical Analyses of Tertiary Volcanic Rocks, Central San Juan Caldera Complex, Southwestern Colorado - USGS Open-File Report 2004-1194

Below are some links to on-line abstracts relating to the San Juan caldera cluster.

Petrologic evolution of the San Juan volcanic field, southwestern Colorado: Pb and Sr isotope evidence - Geological Society of America Bulletin: v. 89, no. 1, p. 59-82, 1978.

Recurrent eruption and subsidence at the Platoro caldera complex, southeastern San Juan volcanic field, Colorado: New tales from old tuffs - Geological Society of America Bulletin: v. 108, no. 8, p. 1039-1055, 1996.

Comagmatic granophyric granite in the Fish Canyon Tuff, Colorado: Implications for magma-chamber processes during a large ash-flow eruption - Geology: v. 25, no. 10, p. 915-918, 1997.

The Fish Canyon Magma Body, San Juan Volcanic Field, Colorado: Rejuvenation and Eruption of an Upper-Crustal Batholith - Journal of Petrology, v. 43, no. 8, p. 1469-1503, 2002.

Rejuvenation of the Fish Canyon magma body: A window into the evolution of large-volume silicic magma systems - Geology: v. 31, no. 9, p. 789-792, 2003.

Contemporaneous Trachyandesitic and Calc-alkaline Volcanism of the Huerto Andesite, San Juan Volcanic Field, Colorado, USA - Journal of Petrology, v. 46, no. 5, p. 859-891, 2005.







U.S. Department of the Interior
KEN SALAZAR, Secretary

U.S. Geological Survey
Marcia K. McNutt, Director