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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
1997
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| Online Access: | https://www.redalyc.org/articulo.oa?id=56836302 |
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Table of Contents:
- The Zitácuaro Volcanic Complex, Michoacán, Mexico: magmatic and eruptive history of a resurgent caldera J. L. Macías L. Capra V. H Garduño Ciencias de la Tierra Trans caldera resurgent domes Mexican volcanic belt The Zitácuaro Volcanic Complex (ZVC) rises on a basement of metamorphic rocks of Late JurassicóEarly Cretaceous age, and volcanic rocks, limestones, and red beds of Cretaceous age. Volcanic activity related to the Trans-Mexican Volcanic Belt started during Early Miocene with the eruption of calc-alkaline andesites that formed a primitive stratovolcano covering an area about 30 km x 15 km. A major change in eruptive style occurred during Middle Miocene, when a caldera structure formed, "Las Tres Chicas Caldera", approximately 30 km in diameter and dated about 12 Ma. Post-caldera activity consisted of three eruptive episodes of intraócaldera dome resurgence around 12 Ma, 5 Ma, and 0.5 Ma. Each episode featured the intrusion of dacitic central domes, the generation of pyroclastic flows and peri-caldera andesitic lava flows. The activity at the ZVC features recurrent volcanic episodes, the most recent one with emplacement of young resurgent domes such as Cacique. Local seismic activity in the area felt at Zitácuaro, is persistent. The ZVC should be considered as a potentially active volcanic zone 1997 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56836302 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.3 Vol.36