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San Pedro

Photo of this volcano
  • Mexico
  • Trans-Mexican Volcanic Belt
  • Caldera | Caldera
  • Pleistocene
  • Country
  • Volcanic Province
  • Landform | Volc Type
  • Last Known Eruption
  • 21.17°N
  • 104.73°W

  • 2,000 m
    6,562 ft

  • 341814
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports available for San Pedro.

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

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

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 San Pedro. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the San Pedro 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 San Pedro.

Emission History

There is no Emissions History data available for San Pedro.

Photo Gallery

The view of the 1870 vent and the San Pedro-Ceboruco graben is from the Ceboruco summit. The small lava dome to the lower right and the unvegetated lava flow to the lower left were emplaced during the 1870-75 eruption. The Cerro San Pedro lava dome on the horizon directly above the 1870 dome was constructed within the 7 x 10 km San Pedro caldera. The peak immediately left of Cerro San Pedro is Cerro Tetillas.

Photo by Lee Siebert, 1997 (Smithsonian Institution).
The indistinct elliptical 7 x 10 km wide San Pedro caldera is seen here in an aerial view from the NE, with Laguna San Pedro on the right. The rim of the caldera is exposed only on the east side (left), where it truncates early Pleistocene andesitic-to-dacitic lava domes. The caldera partially cuts the 1.1 million-year-old Cerro Grande shield volcano, whose low-angle slopes can be seen beyond the left side of the three coalescing post-caldera Cerro San Pedro lava domes (center).

Photo by Jim Luhr, 1979 (Smithsonian Institution).
The three coalescing Cerro San Pedro lava domes (center), seen here from the NE, were constructed within the 7 x 10 km wide San Pedro caldera. The ridge at the left is the eastern rim of the caldera, which cuts andesitic-to-dacitic lava domes of early Pleistocene age. The dacitic San Pedro lava domes were dated at 0.75-0.80 million years and were constructed along a WNW-trending line. Two of the domes have partially collapsed, forming large debris-avalanche deposits that reach up to 10 km from the source.

Photo by Jim Luhr, 1978 (Smithsonian Institution).
GVP Map Holdings

Maps are not currently available due to technical issues.

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.

Smithsonian Sample Collections Database

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

External Sites