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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Tortuga, Isla
Isla Tortuga is 4-km-wide volcanic island located in the Gulf of California, 40 km off the coast of Baja California. The summit contains a 1-km-wide caldera and recent lava flows cover much of the flanks. This 1989 view is from the west. Photo by Marjorie Summers, 1989 (Smithsonian Institution).
Volcano Number:
341011
Volcano Name:
Tortuga, Isla
Country:
Mexico
Volcano Type:
Shield
Elevation:
224m
Tectonic Setting:
Rift zone / Continental crust (> 25 km)
Pop. within 30km:
401
Pop. within 100km:
26978
Latitude:
27.438
Longitude:
-111.881
Details
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A youthful shield volcano forms Isla Tortuga, which lies in the Gulf of California, 40 km off the Baja coast. There is a circular, 1-km-wide caldera, west of the center of the oval 4-km-long island. Circumferential faults cut the rim of the more than 100-m-deep caldera, which is floored by a solidified lava lake and contains youthful-looking spatter cones. The volcano was constructed during two 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. Recent lava flows cover most of the flanks, and fumarolic activity has continued into historical time. A submarine cone with a 2-km-wide summit caldera lies about 5 km ESE of the island on the flanks of the edifice.
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Eruption Data from the Global Volcanism Program of the Smithsonian Institution
Sorry. No erruption data found for this volcano.
Emissions Data from the Global Volcanism Program of the Smithsonian Institution
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Data from the Earthchem Library
Sorry. No data exist for this volcano in the EarthChem Library.
Data from the Earthchem Portal
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Data from the SESAR Database
Sorry. No data exist for this volcano in the SESAR database.
Data from the MaGa Database
Sorry. No data exist for this volcano in the MaGa database.
Data from UNAVCO
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Data from USIEI
Sorry. This volcano is not covered by any USIEI projects
Data from IRIS FDSNWS
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