By Teresa Scolamacchia, José Luis Macías

ISBN-10: 3642258891

ISBN-13: 9783642258893

ISBN-10: 3642258905

ISBN-13: 9783642258909

This e-book summarizes the stories conducted at of the main energetic 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. merely after those explosions a surge of latest experiences started to unreveal their volcanic heritage and influence.
This e-book provides the state-of-the-art advances in issues on the topic of the geologic environment of the 2 volcanoes, their eruptive background and composition of erupted items, the hydrothermal structures and their manifestations. Volcanic dangers and hazards and attainable mitigation plans are mentioned in keeping with the event of the catastrophic eruption of El Chichón that happened in 1982. The e-book also will comprise formerly unpublished fabric at the vegetation and the fauna of the area and archaeological and social elements of the realm that's inhabited by way of indigenous people.

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Extra info for Active Volcanoes of Chiapas (Mexico): El Chichón and Tacaná

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1984; Arce et al. 2014) (Fig. 3). 5 wt% SiO2) being mainly trachybasalts (Fig. 3a–j) with high contents of K2O (Macías et al. 2003; Espíndola et al. 2000; Layer et al. 2009; Arce et al. 2014). The most mafic product of the area is the Chapultenango trachybasalt (Espíndola et al. 2000; Layer et al. 2009, see Chap. 3). 30 (a) (b) 12 Tephriphonolite 10 8 Na2O+K2O Fig. 3 a Total alkalies versus silica diagram (Le Bas et al. 1986), of El Chichón samples; b–j Harker diagrams. Major elements in wt% (recalculated on anhydrous basis) and trace elements in parts per million (ppm).

Arce et al. data, magma genesis seems more clearly associated with subduction of the Cocos Plate considering that Tacaná volcanic rocks have distinct Nb, Ta, and Ti anomalies (Arce et al. 2014). The Nb and Ta anomalies seem to be related to fluids from the subducted plate (Wood et al. 1979), because released fluids from the slab contribute to the enrichment of “lithophile” elements in the magmas produced in convergent zones. Nb and Ta are not involved in this enrichment because they are not mobilized by fluids, due to the presence of insoluble phases in the subducting plates, therefore Nb and Ta would be retained in the slab (Saunders et al.

676356 Kim YH, Clayton R, Keppie DF (2011) Evidence of a collision between the Yucatan Block and Mexico in the Miocene. Geophys J Int. x LaFemina P, Dixon TH, Govers R, Norabuena E, Turner H, Saballos A, Mattioli G, Protti M, Strauch W (2009) Fore-arc motion and Cocos Ridge collision in Central America. Geochem Geophys Geosyst 10:Q05S14. 1029/ 2008GC002181 Layer PW, García-Palomo A, Jones D, Macías JL, Arce JL, Mora JC (2009) El Chichón volcanic complex, Chiapas, México: stages of evolution based on field mapping and 40Ar/39Ar geochronology.

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


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