Mascota Volcanic Field

Photo of this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 20.62°N
  • 104.83°W

  • 2560 m
    8397 ft

  • 341031
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Mascota Volcanic Field.

The Global Volcanism Program has no Weekly Reports available for Mascota Volcanic Field.

The Global Volcanism Program has no Bulletin Reports available for Mascota Volcanic Field.

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

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.

Photo Gallery


The forested lava flow extending across the valley floor in the center of the photo is the youngest flow of the Mascota volcanic field and may be only a few thousand years old. The basaltic-andesite flow was erupted from Volcán Malpais, along the eastern wall of the Mascota graben north of the town of Mascota. The flow is seen here looking west across the graben floor from Volcán Molcajete. Cretaceous rhyolitic ashflow tuffs form the graben walls.

Photo by Jim Luhr, 1985 (Smithsonian Institution).
See title for photo information.
Part of the Mascota volcanic field in the Jalisco tectonic block east of Puerto Vallarta appears in this aerial view from the south. The prominent cinder cone in the center is Volcán Molcajete, which along with the smaller breached cone of Volcán Novillero to its left, is of minette composition and Pleistocene age. The youthful, forested lava flow at the left side of the valley originated from Volcán Malpais. It is located at the valley margin above and left of Volcán Novillero and may be only a few hundred to a few thousand years old.

Photo by Steven Nelson, 1996 (Tulane University).
See title for photo information.
The summit ridge of flat-topped Volcán Molcajete (left) is at the level of the horizon in this view from the SW. Molcajete, referring to stone bowls used for grinding grains, is a common name applied to cinder cones with youthful craters. Volcán El Tecomate is the steep-sided cinder cone at the right. These two cones are located NE of the town of Mascota and are part of a Pleistocene-to-Holocene potassic volcanic field in the Jalisco block, which is being underthrust by the eastward-subducting Rivera tectonic plate.

Photo by Jim Luhr, 1985 (Smithsonian Institution).
See title for photo information.
Volcán el Puerto (left) and steep-sided Volcán Embarcadero (right) are seen from the east across fields of the Mascota graben. Both cones, of hornblende lamprophyre composition, are breached to the east. They lie on the NW side of the Mascota volcanic field and were erupted near the western base of the graben walls, which in this view consist of metamorphic rocks and elsewhere of Cretaceous ash-flow tuffs. The Mascota graben here is about 5 km wide.

Photo by Jim Luhr, 1985 (Smithsonian Institution).
See title for photo information.
A group of calc-alkaline andesitic and minette cinder cones and lava flows are located near the town of Mascota, east of Puerto Vallarta. Steep-sided Tecomate lava cone (left center) is andesitic, and Molcajete cinder cone (right center) is of minette composition; they are seen here from the NW. The youngest eruption, at Volcán Malpais, north of Mascota, produced a fresh-looking lava flow. The lack of soil development and sparse vegetation suggest that it may be as young as a few hundred to at most a few thousand years old.

Photo by Jim Luhr, 1985 (Smithsonian Institution).
See title for photo information.
Steep-sided Volcán Tecomate (left center) and flat-topped Volcán Molcajete (right center), seen here from the NW, are two of the many cinder and lava cones of the Mascota field. These are part of a group of calc-alkaline andesitic and minette cinder cones and lava flows located within the Talpa and Mascota grabens near the town of Mascota, east of Puerto Vallarta. The youngest eruption, at Volcán Malpais, north of Mascota, produced a fresh-looking lava flow that may be as young as a few hundred to at most a few thousand years old.

Photo by Paul Wallace, 1987 (University of California Berkeley).
See title for photo information.

Smithsonian Sample Collections Database


The following 99 samples associated with this volcano can be found in the Smithsonian's NMNH Department of Mineral Sciences collections. Catalog number links will open a window with more information.

Catalog Number Sample Description
NMNH 117174-2 Minette
NMNH 117174-3 Minette with phlogopite and hornblende lamprophyre
NMNH 117174-4 Minette
NMNH 117174-5 Minette with phlogopite and hornblende lamprophyre
NMNH 117174-6 Minette with amphibole and hornblende lamprophyre
NMNH 117253-1 Basalt
NMNH 117253-10 Basalt
NMNH 117253-11 Basalt
NMNH 117253-12 Basalt
NMNH 117253-13 Basalt
NMNH 117253-14 Basalt
NMNH 117253-15 Basalt
NMNH 117253-16 Basalt
NMNH 117253-18 Basalt
NMNH 117253-19 Basalt
NMNH 117253-2 Basalt
NMNH 117253-20 Basalt
NMNH 117253-21 Basalt
NMNH 117253-22 Basalt
NMNH 117253-23 Basalt
NMNH 117253-24 Basalt
NMNH 117253-25 Basaltic andesite
NMNH 117253-26 Basaltic andesite
NMNH 117253-27 Basalt
NMNH 117253-28 Basalt
NMNH 117253-3 Andesite
NMNH 117253-82 Basalt
NMNH 117253-83 Basaltic andesite
NMNH 117253-84 Andesite
NMNH 117253-85 Basalt
NMNH 117626-1 Basalt
NMNH 117626-10 Minette
NMNH 117626-11 Basalt
NMNH 117626-12 Basalt
NMNH 117626-13 Basaltic andesite
NMNH 117626-14 Andesite
NMNH 117626-15 Minette
NMNH 117626-16 Andesite
NMNH 117626-17 Minette
NMNH 117626-18 Minette
NMNH 117626-19 Andesite
NMNH 117626-2 Basalt
NMNH 117626-20 Andesite
NMNH 117626-21 Minette
NMNH 117626-22 Basaltic andesite
NMNH 117626-23 Basalt
NMNH 117626-24 Basaltic andesite
NMNH 117626-25 Basaltic andesite
NMNH 117626-26 Basalt
NMNH 117626-27 Basaltic andesite
NMNH 117626-28 Basalt
NMNH 117626-29 Andesite
NMNH 117626-3 Minette
NMNH 117626-30 Minette
NMNH 117626-31 Minette
NMNH 117626-32 Minette
NMNH 117626-33 Andesitic tuff
NMNH 117626-34 Minette
NMNH 117626-35 Andesite
NMNH 117626-36 Andesite
NMNH 117626-37 Andesite
NMNH 117626-38 Hornblende-olivine andesite
NMNH 117626-39 Minette
NMNH 117626-4 Scoria
NMNH 117626-40 Andesitic tuff
NMNH 117626-41 Alkali olivine basalt
NMNH 117626-42 Andesite
NMNH 117626-43 Rhyolite
NMNH 117626-44 Volcanic
NMNH 117626-45 Basalt
NMNH 117626-46 Minette
NMNH 117626-47 Minette
NMNH 117626-48 Minette
NMNH 117626-49 Basalt
NMNH 117626-5 Scoria
NMNH 117626-50 Minette
NMNH 117626-51 Minette
NMNH 117626-52 Basalt
NMNH 117626-53 Basalt
NMNH 117626-54 Scoria
NMNH 117626-55 Scoria
NMNH 117626-56 Scoria
NMNH 117626-57 Scoria
NMNH 117626-58 Scoria
NMNH 117626-59 Scoria
NMNH 117626-6 Scoria
NMNH 117626-60 Scoria
NMNH 117626-61 Ash
NMNH 117626-62 Scoria
NMNH 117626-63 Scoria
NMNH 117626-64 Scoria
NMNH 117626-65 Scoria
NMNH 117626-66 Spessartite
NMNH 117626-67 Charcoal
NMNH 117626-68 Andesite
NMNH 117626-69 Andesite
NMNH 117626-7 Granite xenolith
NMNH 117626-8 Pumice xenolith
NMNH 117626-9 Basalt

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