San Felipe Volcanic Field


Location: 35° 25' to 35° 35'N, 106° 25' to 106° 35'W, Bernalillo County
Type: Basaltic fissure eruptions & scoria/spatter cones
Age: 2.5 ? 0.3 Ma
Significance:

 Compact volcanic field; numerous fault scarps; classic shield volocano.



 

 

Dr. Larry Crumpler

 

 

San Felipe Volcano is a classic small shield volcano. 

Photo: Dr. Larry Crumpler

 

 

Canjilon Hill from the air is a partially dissected twin steam-blast explosion crater (maar) and represenets the southern margin of the San Felipe field. It is one of the more unusual levels of exposure of a maar in the Southwest.

Photo: Dr. Larry Crumpler

 

 

 

Canjilon Hill  as seen from the highway near Bernalillo.  From this angle it appears as a simple mesa. But actually it is a conical structural depression on an elevated platform that developed by erosion on the margins of the Rio Grande.

Photo: Dr. Larry Crumpler

 

 


View San Felipe Volcanic Field in a larger map

 

General Geology/Relation to Rift:

Kelley, V. C., 1982, Albuquerque: Its Mountains, Valley, Water, and Volcanoes. New Mexico Bureau of Mines and Mineral Resources, Scenic Trips to the Geologic Past Series, No. 9, 3rd edition.


Petrology/Lithology:

Baldridge, W. S., 1979, Petrology and petrogenesis of Plio-Pleistocene basaltic rocks from the central Rio Grande rift New Mexico and their relationship to the Rift, in Riecker, R. E., editor, Rio Grande Rift: Tectonism and Magmatism, American Geophysical Union, Washington, D.C., p. 323-353.
Kelley, V. C., and A. M. Kudo, 1978, Volcanoes and related basalts of Albuquerque basin, New Mexico. New Mexico Bureau of Mines and Mineral Resources, Circular 156, 30p. Kudo, A.M., 1982, Rift volcanics of the Albuquerque basin: overview with some new data., New Mexico Geological Society Guidebook, 33rd Field Conference, Albuquerque Country II, 285-289..
Perry, F. V., W. S. Baldridge, D. J. DePaolo, 1987, Role of asthenosphere and lithosphere in the genesis of late Cenozoic basaltic rocks from thge Rio Grande Rift and adjacent regions of the southwestern United States. Jour. Geophys. Res., 92, 9193-9213.. Volcanology -[no modern volcanological studies have been completed] 

 

  


All text and photo credit due to Dr. Larry Crumpler, New Mexico Museum of Natural History and Science


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