Isla Tortuga volcano

shield volcano 210+ m / 689 ft
Baja California, Mexico, 27.43°N / -111.88°W
Current status: normal or dormant (1 out of 5)

Isla Tortuga volcano is a young basaltic shield volcano that forms the small 4 km wide island of the same name located 40 km off the Baja coast in the Gulf of California.
The volcano has a circular summit caldera, about 100 m deep, containing a frozen lava and several cinder cones from probably relatively recent eruptions. Young lava flows cover most of the volcano's flanks. At present, there is fumarolic activity.

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Typical eruption style: effusive
Isla Tortuga volcano eruptions: unknown, less than 10,000 years ago

Latest nearby earthquakes

TimeMag. / DepthDistance/Location
Fri, 18 Jun 2021 (GMT) (1 earthquake)
2021-06-18 01:45:52 (Hora de México) (18 Jun 2021 06:45:52 GMT)
3.4

12 km
30 km (19 mi)
Gulf of California, 94 km southwest of Guaymas, Sonora, Mexico
Mon, 14 Jun 2021 (GMT) (1 earthquake)
2021-06-14 03:43:08 (Hora de México) (14 Jun 2021 08:43:08 GMT)
3.6

10 km
37 km (23 mi)
Gulf of California, 92 km west of Guaymas, Sonora, Mexico

Background

The shield volcano was constructed during 2 north-migrating periods of activity that began with submarine eruptions and included formation of a circular tuff-ring complex enclosing the caldera.
The sides of a small volcanic horst in the center of the caldera display lava flows overlying a 2-m-thick halite bed, formed when sea water filled the caldera, creating an evaporite basin.


See also: Sentinel hub | Landsat 8
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