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Messico · Campo vulcanico

San Borja Volcanic Field

Tipo
Campo vulcanico
Altitudine
1360 m
Ultima eruzione
Sconosciuto
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. · Foto: Photo by Andy Saunders, 1984 (University of Leichester).
Tipo
Campo vulcanico
Paese
Messico
Regione
Pacifico orientale / Gulf of California Rift Volcanic Province
Altitudine
1360 m
Coordinate
28.500, -113.750
Ultima eruzione
Sconosciuto
Contesto tettonico
Zona di rift / Crosta continentale (> 25 km)
Forma vulcanica
Gruppo vulcanico
Roccia principale
Andesite / Andesite basaltica
Sintesi geologica

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.

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⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.