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Database for the Geologic Map of the Bonanza Caldera Area, Northeastern San...
The San Juan Mountains in southwestern Colorado have long been recognized as a site of exceptionally voluminous mid-Tertiary volcanism, including at least 24 major ignimbrite... -
Database for the Geologic Map of the Bonanza Caldera Area, Northeastern San...
The San Juan Mountains in southwestern Colorado have long been recognized as a site of exceptionally voluminous mid-Tertiary volcanism, including at least 24 major ignimbrite...