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Geology of Las Minas: an example of an exhumed geothermal system (Eastern Trans-Mexican Volcanic Belt)

Author

Listed:
  • Emmanuel Olvera-García
  • Caterina Bianco
  • Garduño-Monroy Víctor Hugo
  • Andrea Brogi
  • Domenico Liotta
  • Walter Wheeler
  • Fidel Gómez-Alvarez
  • Sergio Najera-Blas
  • Adrián Jiménez-Haro
  • Jorge Alejandro Guevara-Alday
  • Eivind Bastesen
  • Baptiste Lepillier
  • Martina Zucchi
  • Alfredo Caggianelli
  • Giovanni Ruggieri

Abstract

The Las Minas area corresponds to an exhumed geothermal system considered a proxy for the deep part of the nearby Los Humeros active geothermal system. The stratigraphic succession is made up of: Palaeozoic-Miocene granitoids, a thick Jurassic- Cretaceous carbonate succession, Neogene lava flows and volcano-sedimentary deposits. Linked to a Miocene magma intrusion, marble and skarn rock-volumes developed by contact metamorphism and geothermal fluid flow. Faults are arranged in SW- and NNW-striking systems. These controlled the morphological evolution and favored Neogene-Quaternary dyke emplacement. Faulting gave rise to a tectonic depression where lacustrine sediments and pyroclastics deposited. Skarn rocks are mainly located at fault intersections and along pre-existing discontinuities, suggesting the role of bedding and/or fractures in channeling deep fluids. Results give inputs for exploration at depth of Los Humeros geothermal system.

Suggested Citation

  • Emmanuel Olvera-García & Caterina Bianco & Garduño-Monroy Víctor Hugo & Andrea Brogi & Domenico Liotta & Walter Wheeler & Fidel Gómez-Alvarez & Sergio Najera-Blas & Adrián Jiménez-Haro & Jorge Alejand, 2020. "Geology of Las Minas: an example of an exhumed geothermal system (Eastern Trans-Mexican Volcanic Belt)," Journal of Maps, Taylor & Francis Journals, vol. 16(2), pages 918-926, December.
    • Handle: RePEc:taf:tjomxx:v:16:y:2020:i:2:p:918-926
    DOI: 10.1080/17445647.2020.1842815
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    Cited by:

    1. Domenico Liotta & Andrea Brogi & Giovanni Ruggieri & Martina Zucchi, 2021. "Fossil vs. Active Geothermal Systems: A Field and Laboratory Method to Disclose the Relationships between Geothermal Fluid Flow and Geological Structures at Depth," Energies, MDPI, vol. 14(4), pages 1-27, February.

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