Isla San Luis Volcano
Updated: Apr 24, 2024 14:11 GMT -
tuff cone 180? m / 591 ft
Baja California, Mexico, 29.97°N / -114.4°W
Current status: normal or dormant (1 out of 5)
Baja California, Mexico, 29.97°N / -114.4°W
Current status: normal or dormant (1 out of 5)
Isla San Luis volcano forms the largest of the 7 Encantada islands in the northern part of the Gulf of California, about 3 km offshore. It is 4.5 sq km large and consists of a 180 m high cone with a narrow peninsula on the SW end.
It is not known when the volcano last erupted, but it could have been less than 100 years ago.
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Isla San Luis volcano eruptions: unknown, possibly less than 100 years ago
Latest nearby earthquakes
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Background
The volcano is located at the NW end of the Guaymas lineament. Initial basaltic-andesite and andesitic submarine surtseyan eruptions produced palagonite tuffs and were followed by the effusion of subaerial dacitic lava flows and the formation of dacitic tuff rings.The latest eruptions formed 2 rhyolitic obsidian domes, the younger inside a tuff cone at the center of the island and at the older located at the NW tip of the island.