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San Borja Volcanic Field

Volcanic field · Mexico · 1360m

The ridge in the background is a thick basaltic andesite lava flow of probable Holocene in age that is part of the San Borja Volcanic Field. The flow is seen here from State Highway 1 in central Baja California. The sparsely vegetated flow is one of many younger lava flows of the field.
The ridge in the background is a thick basaltic andesite lava flow of probable Holocene in age that is part of the San Borja Volcanic Field. The flow is seen here from State Highway 1 in central Baja California. The sparsely vegetated flow is one of many younger lava flows of the field. · Photo: Photo by Andy Saunders, 1984 (University of Leichester).
Type
Volcanic field
Country
Mexico
Region
Eastern Pacific Volcanic Regions / Gulf of California Rift Volcanic Province
Elevation
1360m
Coordinates
28.500, -113.750
Last eruption
Unknown
Tectonic setting
Rift zone / Continental crust (> 25 km)
Landform
Cluster
Major rock type
Andesite / Basaltic Andesite
Geological summary

The San Borja (or El Rosarito) volcanic field, is located in central Baja California NE of the Vizcaino Peninsula. Holocene lava flows occur at Rosarito and Morro San Domingo at the western end of the field along the coast north of the Vizcaino Peninsula. Some lava flows are less vegetated than flows of the San Quintín volcanic field to the north that overlie 5,000-6,000 year-old midden deposits (Rogers et al., 1985). The Holocene lava flows in the western part of this alkalic volcanic field are of basaltic andesite and andesitic composition.

Eruption history

Detailed timeline

No eruption records available.

External links

⚠ For reference only. Not for emergency response.