Active Volcanoes of Chiapas (Mexico): El Chichón and Tacaná by Teresa Scolamacchia, José Luis Macías

By Teresa Scolamacchia, José Luis Macías

This book summarizes the reports performed at of the main lively volcanoes of Chiapas (Mexico): El Chichón and Tacaná. El Chichón erupted explosively in 1982 killing greater than 2000 humans being the worst volcanic catastrophe in Mexico, and Tacaná produced light phreatic explosions in 1950 and 1986. simply after those explosions a surge of latest reviews started to unreveal their volcanic background and effect.
This booklet offers the state-of-the-art advances in subject matters on the topic of the geologic atmosphere of the 2 volcanoes, their eruptive background and composition of erupted items, the hydrothermal platforms and their manifestations. Volcanic dangers and hazards and attainable mitigation plans are mentioned in accordance with the event of the catastrophic eruption of El Chichón that happened in 1982. The publication also will contain formerly unpublished fabric at the flowers and the fauna of the sector and archaeological and social elements of the world that's inhabited by means of indigenous people.

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Additional resources for Active Volcanoes of Chiapas (Mexico): El Chichón and Tacaná

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AAPG Bull 87:1599– 1622 Keppie JD, Moran-Zenteno DJ (2005) Tectonic implications of alternative cenozoic reconstructions for Southern Mexico and the Chortis Block. Int Geol Rev 47:473–491 Keppie DF, Keppie JD (2012) An alternative Pangea reconstruction for Middle America with the Chortis Block in the Gulf of Mexico: tectonic implications. Int Geol Rev. doi:10. 676361 Keppie DF (2012) Derivation of the Chortis and Chiapas blocks from the western Gulf of Mexico in the latest Cretaceous– Cenozoic: the Pirate model.

2012). e. Chapultenango trachybasalt and mafic enclaves) (Fig. 7f). The large-ion-lithophile element concentrations of the Tacaná volcanic rocks are also consistently lower than those from El Chichón (Arce et al. 2014). e. P2O5, Fe2O3, Ba, K2O, and K2O/P2O5 ratio), possibly indicating analogous fractionating assemblages and conditions (Fig. 7b–j). Notably, the TVC rocks extend to higher K2O/P2O5 than those from El Chichón (Fig. 7i). Also, four of the Tacaná basalts (corresponding to mafic enclaves) have somewhat higher TiO2, but, unlike high-Ti samples from El Chichón, show no other compositional distinctions on Harker diagrams (Fig.

The high contents in Ti (>1 wt%) in the magmas of Central American volcanoes have been attributed to melting due to decompression of an asthenospheric mantle (Bolge et al. 2009). This concept could be applied also for El Chichón magmatism, where extensional tectonism has been documented (García-Palomo et al. 2004; Chap. 1). A Cocos-related origin for magmatism at El Chichón is under discussion, considering a truncation of the Cocos Plate at a depth of 100 km by the subducted Yucatán Plate suggested recently by Kim et al.

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