Volcanic geology of the easternmost sector of the Trans-Mexican Volcanic Belt, Mexico
Por:
Carrasco-Nunez, G., Hernandez, J., Cavazos-Alvarez, J., Norini, G., Orozco-Esquivel, T., Lopez-Quiroz, P., Jaquez, A., De Leon-Barragan, L.
Publicada:
1 dic 2021
Resumen:
This work presents the volcanic geology of the easternmost sector of the
Trans-Mexican Volcanic Belt, including the Serdan-Oriental basin and
Cofre de Perote-Citlaltepetl volcanic range, two contrasting Quaternary
volcanic fields. The first comprises dominant monogenetic volcanism of
bimodal composition including isolated rhyolitic domes and tuff rings,
basaltic andesite maar volcanoes, cinder and lava cones, and an active
caldera complex (Los Humeros). The second is dominated by large
composite polygenetic volcanoes of andesitic-dacitic composition,
including the shield-like compound Cofre de Perote volcano, La Gloria
and Las Cumbres complexes, and the active Citlaltepetl stratovolcano.
Mapping units include a pre-volcanic basement made of metamorphic
(Paleozoic), and sedimentary (Jurassic-Cretaceous); intrusive (Miocene)
rocks; multiple basaltic-andesitic lava flows and rhyolitic domes;
volcaniclastic sequences (debris avalanches and lahars; and pyroclastic
deposits (block-and-ash flows, ignimbrites, fallouts, and surges)
(Miocene-Holocene). This map provides a comprehensive view of the highly
diverse volcanism, which may reference for future research work.
Open Access
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