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Título del libro: 17th Biennial Sga Meeting, 2023, Vol 1
Título del capítulo: El Chichon volcano, Mexico: A window into an active Porphyry-Cu-Mo-Au system

Autores UNAM:
JULIE ROBERGE; GERARDO FERNANDO ARRIETA GARCIA;
Autores externos:

Idioma:

Año de publicación:
2023
Resumen:

The 1982 eruption of El Chichon volcano, Mexico, left an acid crater lake with energetic fumaroles and thermal spring activity. El Chichon displays mineralogical and geochemical characteristics that are unique with respect to typical arc volcanoes and other volcanic centers within the Chiapas belt, including mineralized lithic fragments. Several decade-old published research studies have alluded to the possible connection between El Chichon magmatism and porphyry Cu mineralization. We aim to summarize these observations, and along with new hornblende mineral thermobarometry demonstrate that they complement current models for the genesis of fertile parental magmas and the development of Porphyry Cu-Mo- Au Systems. We suggest that while the 1982 plinian eruption revealed the epithermal portion of the magmatic-hydrothermal system, the altered lithic fragments found in pyroclastic deposits likely represent a mineralized zone from an actively developing porphyry deposit at depth.


Entidades citadas de la UNAM: