Isla San Luis volcano

tuff cone 180? m / 591 ft
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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Typical eruption style: explosive
Isla San Luis volcano eruptions: unknown, possibly less than 100 years ago

TimeMag. / DepthDistance/Location
Sunday, October 17, 2021 09:37 GMT (1 earthquake)
Oct 17, 2021 2:37 am (GMT -7) (Oct 17, 2021 09:37 GMT)
3.5

16 km
28 km (17 mi)
Gulf of California, 149 km south of Puerto Peñasco, Sonora, Mexico

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.


See also: Sentinel hub | Landsat 8
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