Summer Coon is an Oligocene stratovolcano in Saguache County, Colorado that erupted between 24 and 34 million years ago. It is located 6 miles (9.6 km) north of Del Norte, Colorado and is on the western edge of the San Luis Valley. It is in the Rio Grande National Forest.
The New Mexico Geological Society published an article on it in 1971. Various studies of the area and its volcanic intrusions have been carried out. These include a study of trace element variations at the summit. La Ventana Arch resulted from erosion following volcanic activity.
See also
References
- "The geology of Summer Coon volcano near Del Norte, Colorado" (PDF). sites.coloradocollege.edu. Retrieved 19 October 2023.
- Noblett, Jeffrey B.; Loeffler, Bruce M. (1987). "The geology of Summer Coon volcano near Del Norte, Colorado". Rocky Mountain Section of the Geological Society of America. Boulder, Colorado: Geological Society of America. pp. 349–352. doi:10.1130/0-8137-5402-x.349. ISBN 0-8137-5402-X.
- "NMGS 1971 Guidebook Details". New Mexico Geological Society. doi:10.56577/ffc-22.265. Retrieved 2023-10-19.
- Zielinski, Robert A.; Lipman, Peter W. (1976). "Trace-element variations at Summer Coon volcano, San Juan Mountains, Colorado, and the origin of continental-interior andesite". GSA Bulletin. 87 (10): 1477. Bibcode:1976GSAB...87.1477Z. doi:10.1130/0016-7606(1976)87<1477:TVASCV>2.0.CO;2. Retrieved 19 October 2023.
- "La Ventana Arch". Atlas Obscura.
37°46′30″N 106°22′04″W / 37.77500°N 106.36778°W / 37.77500; -106.36778
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