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Comondú-La Purísima Volcano | John Seach
Baja California, Mexico
26.00 N, 111.92 W
summit elevation 780 m
Volcanic field
Comondú-La Purísima volcanic field is located in southern Baja California. The field extends over an area of almost 9000 sq km.
Volcanic activity of La Purısima area is related to the subduction of the Farallon and Guadalupe plates below Baja California.
Eruptions at Comondú-La Purísima Volcano
1) Normal to K-rich calc-alkaline lavas were erupted over 11 million
years ago.
2) Magnesium andesites and tholeiites were erupted 10.6 to 8.8
million years ago.
3) Small volumes of magnesium andesites erupted in the central and
southern parts of the volcanic field, in two eruptions 5.5 and 2.5
million years ago.
4) The most recent eruptions produced basaltic and magnesium
andesitic fissural and central emissions. This formed strombolian
cones and associated lava flows, mainly distributed within a NNW–SSE
trending graben located SE of the town of La Purısima.
Comondú-La Purísima Volcano Eruptions
Eruptions during the past 11 million years.