Geology of Las Cumbres Volcanic Complex, Puebla and Veracruz states, Mexico
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad Nacional Autónoma de México
2005
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| _version_ | 1876455070931877888 |
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| author | Sergio Raúl Rodríguez |
| author_facet | Sergio Raúl Rodríguez |
| contents | Geology of Las Cumbres Volcanic Complex, Puebla and Veracruz states, Mexico Sergio Raúl Rodríguez Ciencias de la Tierra Trans Puebla Mexico Veracruz volcanism Las Cumbres Volcanic Complex (LCVC) is part of a nearly NESW aligned volcanic rangeformed by the Cofre de Perote extinct volcano to the north, and the active Citlaltépetl volcano to thesouth. This volcanic range is one of the most striking morphological features in the eastern Trans-Mexican Volcanic Belt. This geological study describes the different volcanic structures and associateddeposits forming the LCVC, which was built upon Cretaceous limestones and Tertiary intrusive rocks ofsyenitic composition. The LCVC geological map includes ten lithostratigraphic volcanic units, some ofwhich include members representing different eruptive periods. The LCVC history has been subdividedin four stages: The fi rst and older stage (~600 ka) consists of thick andesitic lava fl ows that formed theLas Cumbres stratovolcano, with an estimated volume of 200 km3. The second stage (350 40 ka) isrepresented by the collapse of the east fl ank of the Las Cumbres stratovolcano. This eruption completelymodifi ed the morphology of the Las Cumbres volcano and produced debris avalanche and pyroclasticdeposits, as well as lava fl ows with a minimum volume of 50 km3. The third stage (40 20 ka), includethe rhyolitic fall deposits of the Quetzalapa pumice, the debris avalanche deposits from the small fl ankcollapse at the Sillatepec dome, and the extrusion of the dacitic Chichihuale dome. Its estimated volumeis 20 km3. The fourth stage (<20 ka) was dominated by intense monogenetic activity, particularly to thenorth of the LCVC, with scoria cones showing a regional NESW orientation. According to the mineralogyand chemistry of the rocks presented in this paper, processes of assimilation and contamination mighthave affected the LCVC magmas. 2005 artículo científico 1026-8774 https://www.redalyc.org/articulo.oa?id=57222204 en http://www.redalyc.org/revista.oa?id=572 Revista Mexicana de Ciencias Geológicas application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Ciencias Geológicas (México) Num.2 Vol.22 |
| format | Artículo científico |
| id | redalyc_57222204 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Geology of Las Cumbres Volcanic Complex, Puebla and Veracruz states, Mexico Sergio Raúl Rodríguez Ciencias de la Tierra Trans Puebla Mexico Veracruz volcanism Geology of Las Cumbres Volcanic Complex, Puebla and Veracruz states, Mexico Sergio Raúl Rodríguez Ciencias de la Tierra Trans Puebla Mexico Veracruz volcanism Las Cumbres Volcanic Complex (LCVC) is part of a nearly NESW aligned volcanic rangeformed by the Cofre de Perote extinct volcano to the north, and the active Citlaltépetl volcano to thesouth. This volcanic range is one of the most striking morphological features in the eastern Trans-Mexican Volcanic Belt. This geological study describes the different volcanic structures and associateddeposits forming the LCVC, which was built upon Cretaceous limestones and Tertiary intrusive rocks ofsyenitic composition. The LCVC geological map includes ten lithostratigraphic volcanic units, some ofwhich include members representing different eruptive periods. The LCVC history has been subdividedin four stages: The fi rst and older stage (~600 ka) consists of thick andesitic lava fl ows that formed theLas Cumbres stratovolcano, with an estimated volume of 200 km3. The second stage (350 40 ka) isrepresented by the collapse of the east fl ank of the Las Cumbres stratovolcano. This eruption completelymodifi ed the morphology of the Las Cumbres volcano and produced debris avalanche and pyroclasticdeposits, as well as lava fl ows with a minimum volume of 50 km3. The third stage (40 20 ka), includethe rhyolitic fall deposits of the Quetzalapa pumice, the debris avalanche deposits from the small fl ankcollapse at the Sillatepec dome, and the extrusion of the dacitic Chichihuale dome. Its estimated volumeis 20 km3. The fourth stage (<20 ka) was dominated by intense monogenetic activity, particularly to thenorth of the LCVC, with scoria cones showing a regional NESW orientation. According to the mineralogyand chemistry of the rocks presented in this paper, processes of assimilation and contamination mighthave affected the LCVC magmas. 2005 artículo científico 1026-8774 https://www.redalyc.org/articulo.oa?id=57222204 en http://www.redalyc.org/revista.oa?id=572 Revista Mexicana de Ciencias Geológicas application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Ciencias Geológicas (México) Num.2 Vol.22 |
| title | Geology of Las Cumbres Volcanic Complex, Puebla and Veracruz states, Mexico |
| topic | Ciencias de la Tierra Trans Puebla Mexico Veracruz volcanism |
| url | https://www.redalyc.org/articulo.oa?id=57222204 |