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There are no activity reports for Mascota Volcanic Field.
Available Weekly Reports
There are no Weekly Reports available for Mascota Volcanic Field.
There are no Holocene eruptions known for Mascota Volcanic Field. If this volcano has had large eruptions prior to 10,000 years ago, information might be found in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.
Carmichael I S E, Lange R A, Luhr J F, 1996. Quaternary minettes and associated volcanic rocks of Mascota, western Mexico: a consequence of plate extension above a subduction modified mantle wedge. Contr Mineral Petr, 124: 302-333.
Lange R A, Carmichael I S E, 1990. Hydrous basaltic andesites associated with minette and related lavas in western Mexico. J Petr, 31: 1225-1259.
Ownby S E, Lange R A, Hall C M, 2008. The eruptive history of the Mascota volcanic field, western Mexico: age and volume constraints on the origin of andesite among a diverse suite of lamprophyric and calc-alkaline lavas. J Volc Geotherm Res, 177: 1077-1091.
Wallace P J, Carmichael I S E, Righter K, Becker T A, 1992. Volcanism and tectonism in western Mexico: a contrast of style and substance. Geology, 20: 625-628.
A group of calc-alkaline andesitic and minette cinder cones and lava domes, both with associated lava flows, is located near the town of Mascota, in the Jalisco tectonic block about 50 km east of Puerto Vallarta. Mascota is the youngest of a group of potassic volcanic fields in extensional grabens of the Jalisco block south of the Río Ameca. Most volcanism in the Mascota volcanic field is confined to two NNW-SSE-trending grabens cutting Cretaceous ash-flow tuffs. The youngest eruption, at Volcán Malpaís, north of Mascota, produced a fresh-looking basaltic-andesite lava flow. The lack of soil development and sparse vegetation suggest that it may be only a few thousand years old (Carmichael et al., 1996). The volcanic field is noted for its unusual diversity of volcanic rocks, and Mascota contains Earth's youngest known minettes, with radiometric ages down to 0.07 +/- 0.08 million years.