You are here

Southern edge of the San Juan volcanic field

Location: 
36°37'18.27", 106°18'59.39"
Type: 
Outlying flows and tuffs from series of ash flow calderas in the central and southern San Juan volcanic field
Age: 
22-40 Ma
Significance: 
The southern type of the extension San Juan volcanic field, site of multiple super eruptions much like the Datil-Mogollon field of southwestern NM
Composition: 
Rhyolite to intermdiate ash, lava, and intrusions