Tres Virgenes volcanTres Vírgenes volcano is a complex of 3 stratovolcanoes, El Viejo, El Azufre, and La Virgen, in east-central Baja California and the only larger volcano on the peninsula.
Possible eruptions occurred in 1746 and 1857.
A geothermal plant is located at the northern end of the complex near the margin of the Pleistocene El Aguajito caldera.
Introduction:The 3 volcanoes, El Viejo, El Azufre, and La Vírgen were constructed along a NE-SW line and are progressively younger to the SW. The youngest volcano, La Vírgen, is an andesitic stratovolcano with numerous dacitic lava domes and lava flows on its flanks. A major plinian explosive eruption from a SW-flank vent was radiocarbon dated at about 6500 years ago, but Helium exposure and Uranium-series dates give a late-Pleistocene age for this event. An ash plume was reported from Tres Vírgenes volcano by a Spanish Jesuit priest while navigating the Gulf of California in 1746. No tephra deposits from such a young eruption have been found, but young undated andesitic lava flows at the summit could potentially be related to this event.
(Source: Smithsonian / GVP)
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