San Borja Volcanic Field
Volcanic field in Mexico
Key Facts
Elevation
1,360 m (4,462 ft)
Type
Volcanic field
Location
28.500°, -113.750°
Region
Gulf of California Rift Volcanic Province
Rock Type
Andesite / Basaltic Andesite
Tectonic Setting
Rift zone
Location
Loading map...
Overview
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.
Volcanic Hazards & Risk Assessment
Primary Hazards
Risk Level
Geological Composition & Structure
Rock Types
Tectonic Setting
Age & Formation
Eruption Statistics & Analysis
| Metric | Value | Global Ranking | Significance |
|---|---|---|---|
| Total Recorded Eruptions | Unknown | Low | Moderately active volcano |
| Maximum VEI | VEI Unknown | Minor | Local impact potential |
| Recent Activity | Unknown | Historical | Historically active |
Monitoring & Alert Status
Monitoring Networks
Current Status
Nearby Volcanoes in Eastern Pacific Volcanic Regions
Quick Info
- •Smithsonian ID: 341007
- •Evidence: Evidence Credible
- •Epoch: Holocene
About the Photo
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 by Andy Saunders, 1984 (University of Leichester).
Authority Sources
Related Volcanoes
Basic Information
This page shows basic data from the Smithsonian Global Volcanism Program. For more detailed information, visit the official Smithsonian page.