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Isla San Luis

Photo of this volcano
  • Mexico
  • México and Central America
  • Tuff cone
  • Unknown - Evidence Credible
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 29.97°N
  • 114.4°W

  • 180 m
    591 ft

  • 341003
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Isla San Luis.

The Global Volcanism Program has no Weekly Reports available for Isla San Luis.

The Global Volcanism Program has no Bulletin Reports available for Isla San Luis.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Eruptive History

The Global Volcanism Program is not aware of any Holocene eruptions from Isla San Luis. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Isla San Luis page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

Deformation History

There is no Deformation History data available for Isla San Luis.

Emission History

There is no Emissions History data available for Isla San Luis.

Photo Gallery

Isla San Luis, seen here from the SW with a large rhyolitic lava dome near the center, is the largest of the seven Encantada islands in the northern part of the Gulf of California. The roughly 180-m-high island lies 3 km off the eastern shore of Baja California. An older lava dome forms the NE tip of the island, and an eroded tuff ring lies at the SE tip. The lava dome seen here in the center of the island was constructed within a tuff ring and is the youngest volcanic feature.

Photo by Brian Hausback, 1997 (California State University, Sacramento).
Isla San Luis is seen here from the south with a 2-km-long spit (at low tide) to the lower left. The main features of the island are a rhyolite lava dome forming the NW tip of the island, the darker rhyolitic obsidian dome and coulee in the center, and an eroded tuff ring at the SE tip of the island (to the right). Another tuff ring, Isla Poma, lies 1 km NE of Isla San Luis and is visible to the right.

Photo by Brian Hausback, 2000 (California State University, Sacramento).
Isla San Luis lies across a narrow channel from the NE coast of Baja California (in the background). A rhyolite obsidian dome is in the center of the small island. An older dome forms the northern part of the island (foreground) and is partially mantled by ash and pumice from the central dome. An eroded tuff ring, Plaza de Toros, occupies the SE end of the island.

Photo by Keith Sutter, 2000.
The Plaza de Toros tuff ring on the SE side of Isla San Luis is seen here from the east in 2000. Remnants of dacite lava flows are visible in the upper walls of the crater. Only a third of the tuff ring is still standing; the rest has subsided along normal faults or was eroded by wave action. Longshore currents have redistributed volcanic deposits to produce the tombolo to the upper right that forms the SW tip of the island and is 2 km long at low tide.

Photo by Keith Sutter, 2000.
An obsidian lava dome fills the crater in the center of Isla San Luis, off the NE coast of Baja California, seen in this photo that was taken in 2000. As growth of the dome continued, a thick coulee advanced to the south and overflowed the rim to form the broad lobe behind it. The eroded Plaza de Toros tuff ring in the left background forms the SE tip of the island.

Photo by Keith Sutter, 2000.
GVP Map Holdings

The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included. The maps database originated over 30 years ago, but was only recently updated and connected to our main database. We welcome users to tell us if they see incorrect information or other problems with the maps; please use the Contact GVP link at the bottom of the page to send us email.


Title: Isla Angel de La Guarda
Publisher: INEGI
Country: Mexico
Year: 1998
Map Type: Topographic
Scale: 1:250,000
Map of Isla Angel de La Guarda

Title: Carta Geolica de la Republica Mexicana
Publisher: Recursos Minerales and Institute de Gelogia
Country: Mexico
Year: 1992
Map Type: Geology
Scale: 1:2,000,000
Map of Carta Geolica de la Republica Mexicana

Title: Mexico, United States
Publisher: DMA Aerospace Center
Country: Mexico, US- AZ
Year: 1986
Series: ONC
Map Type: Topographic
Scale: 1:1,000,000
Map of Mexico, United States

Title: W US /Map of Dist, Comp, Age-Late CZ Volc Centers
Publisher: US Geological Survey
Country: United States
Year: 1984
Series: MI
Map Type: Geology (Volcano)
Scale: 1:2,500,000
Map of W US /Map of Dist, Comp, Age-Late CZ Volc Centers

Title: Estado de Baja California
Publisher: USGS /SAHOP
Country: Mexico
Year: 1982
Series: SAHOP Landsat
Map Type: Satellite
Scale: 1:1,000,000
Map of Estado de Baja California

Title: Estado de Baja California Sur
Publisher: USGS /SAHOP
Country: Mexico
Year: 1982
Series: SAHOP Landsat
Map Type: Satellite
Scale: 1:1,000,000
Map of Estado de Baja California Sur

Title: Estado de Sonora
Publisher: USGS /SAHOP
Country: Mexico
Year: 1982
Series: SAHOP Landsat
Map Type: Satellite
Scale: 1:1,000,000
Map of Estado de Sonora

Title: Isla Cedros
Publisher: SPP & DGETN
Country: Mexico
Year: 1980
Map Type: Topographic
Scale: 1:250,000
Map of Isla Cedros

Title: Punta San Antonio
Publisher: SPP & DGETN
Country: Mexico
Year: 1978
Map Type: Topographic
Scale: 1:250,000
Map of Punta San Antonio

Title: Agua de Higuera
Publisher: Comision de Estudios del Territorio Nacional
Country: Mexico
Year: 1978
Map Type: Geology
Scale: 1:50,000
Map of Agua de Higuera

Title: El Crucero
Publisher: Comision de Estudios del Territorio Nacional
Country: Mexico
Year: 1977
Map Type: Geology
Scale: 1:50,000
Map of El Crucero

Title: Valle Agua Amarga
Publisher: Comision de Estudios del Territorio Nacional
Country: Mexico
Year: 1977
Map Type: Geology
Scale: 1:50,000
Map of Valle Agua Amarga

Title: Sonora
Publisher: American Geographical Society of New York
Country: Mexico
Year: 1958
Series: North America
Map Type: Physiographic
Scale: 1:1,000,000
Map of Sonora
Smithsonian Sample Collections Database

There are no samples for Isla San Luis in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

External Sites