Volcano stratigraphy and physical characterization of the San Mateo Pomez Unit, Cerritos Member: Temascalcingo Volcano, Central Mexico
Por:
Pedrazzi, Dario, Aguirre-Diaz, Gerardo J., Sunye-Puchol, Ivan, Becerril, Laura, Miggins, Daniel P.
Publicada:
15 oct 2018
Resumen:
The Temascalcingo volcano is a dacitic stratovolcano located at the eastern part of the Acambay graben, a tectonic basin in the central sector of the Trans-Mexican Volcanic Belt (TMVB), which is an active, mostly calc-alkaline volcanic arc that crosses Mexico from the Pacific Ocean to the Gulf of Mexico. This study characterises the explosive activity of the San Mateo Pumice eruption that is the most recent and largest paroxysmal episode of this volcano and the last unit of the Cerritos Member. Indeed, this eruption is associated with an undated debris avalanche event consisting of a major sector collapse developed on the western flank of the volcano. Stratigraphic data suggest a highly explosive eruption that generated a relatively thick (up to 10 m) and widespread pumice fallout deposit, trending to the NE, and an aerial distribution of at least 100 km2. This subplinian type eruption of VEI 4 lasted about 9 h and produced a plume height up to 12 km above the vent (i.e., ~14 km above sea level). This type of explosive eruption is relatively common in the TMVB, so a comprehensive geological study, with the corresponding numerical simulations like the one that was carried out, contributes to the understanding of the explosive volcanism of modest size stratovolcanoes that are common in the TMVB. © 2018 Elsevier B.V.
Filiaciones:
Pedrazzi, Dario:
ICTJA, CSIC, Group of Volcanology, SIMGEO UB-CSIC, Institute of Earth Sciences Jaume Almera, Lluis Sole i Sabaris s/n, Barcelona, 08028, Spain
Centro de Geociencias, Universidad Nacional Autónoma de Mexico, Campus Juriquilla, Querétaro, Qro 76230, Mexico
SIMGEO UB CSIC, Grp Volcanol, Inst Earth Sci Jaume Almera, ICTJA, Lluis Sole & Sabaris S-N, Barcelona 08028, Spain
Univ Nacl Autonoma Mexico, Ctr Geociencias, Campus Juriquilla, Queretaro 76230, Qro, Mexico
Aguirre-Diaz, Gerardo J.:
Centro de Geociencias, Universidad Nacional Autónoma de Mexico, Campus Juriquilla, Querétaro, Qro 76230, Mexico
Univ Nacl Autonoma Mexico, Ctr Geociencias, Campus Juriquilla, Queretaro 76230, Qro, Mexico
Sunye-Puchol, Ivan:
Centro de Geociencias, Universidad Nacional Autónoma de Mexico, Campus Juriquilla, Querétaro, Qro 76230, Mexico
Univ Nacl Autonoma Mexico, Ctr Geociencias, Campus Juriquilla, Queretaro 76230, Qro, Mexico
Becerril, Laura:
ICTJA, CSIC, Group of Volcanology, SIMGEO UB-CSIC, Institute of Earth Sciences Jaume Almera, Lluis Sole i Sabaris s/n, Barcelona, 08028, Spain
Servicio Nacional de Geología y Minería, SERNAGEOMIN, Avd. Santa María, 0104 – Providencia, Santiago de Chile, Chile
SIMGEO UB CSIC, Grp Volcanol, Inst Earth Sci Jaume Almera, ICTJA, Lluis Sole & Sabaris S-N, Barcelona 08028, Spain
SERNAGEOMIN, Serv Nacl Geol & Mineria, Avd Santa Maria,0104 Prov, Santiago, Chile
Miggins, Daniel P.:
College of Earth, Ocean and Atmospheric Sciences, Oregon State University, 104 CEOAS Administration Building, 101 SW 26th St, Corvallis, OR 97331, United States
Oregon State Univ, Coll Earth Ocean & Atmospher Sci, 104 CEOAS Adm Bldg,101 SW 26th St, Corvallis, OR 97331 USA
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