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STRATI 2013 pp 1257-1261 | Cite as

Geology and Stratigraphy of the Cerro Prieto Volcanic Complex, Baja California Norte, México

  • Laura García SánchezEmail author
  • José Luis Macías
  • José Luis Arce
  • Víctor Hugo Garduño-Monroy
  • Ricardo Saucedo
  • Paul Layer
  • Víctor Santiago Rocha
  • Guillermo Cisneros
Conference paper
Part of the Springer Geology book series (SPRINGERGEOL)

Abstract

New mapping and stratigraphy of the Cerro Prieto Volcanic Complex indicates that it was constructed by several events: (1) The beginning was characterized by the emission of dacitic lavas that interacted with water-saturated sandstones, producing brecciated lavas; (2) then, effusive activity formed a lava dome that was destroyed by a phreatic eruption, producing a lithic fallout and a 300-m-wide summit crater; (3) afterwards, the volcano recorded effusive activity with the emplacement of three domes and a fissural lava flow; and (4) subsequent erosion of the volcanic complex resulted in the emplacement of debris flows around the complex. These magmatic events occurred at around 80 ka over a relatively short period of time. All rocks of this complex are composed of porphyritic lavas with phenocrysts of opx + plg + qtz + iron oxides ≫ ghost of amphibole, embedded in a groundmass with plagioclase microlites and glass, with a dacitic chemical composition (67–69 wt % silica).

Keywords

Volcanic Stratigraphy Geochemistry Cerro Prieto Mexico 

References

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Laura García Sánchez
    • 1
    Email author
  • José Luis Macías
    • 2
  • José Luis Arce
    • 3
  • Víctor Hugo Garduño-Monroy
    • 1
  • Ricardo Saucedo
    • 4
  • Paul Layer
    • 5
  • Víctor Santiago Rocha
    • 6
  • Guillermo Cisneros
    • 7
  1. 1.Posgrado del Investigaciones MetalúrgicasUniversidad Michoacana de San Nicolás de HidalgoMoreliaMexico
  2. 2.Unidad Michoacán, Instituto de GeofísicaUniversidad Nacional Autónoma de MéxicoMoreliaMexico
  3. 3.Instituto de GeologíaUNAMDistrito FederalMexico
  4. 4.Instituto de GeologíaUniversidad Autónoma de San Luis PotosíSan Luis PotosíMexico
  5. 5.Geochronology LaboratoryUniversity of FairbanksAlaskaUSA
  6. 6.Departamento de GeologíaCFEColimaMexico
  7. 7.Posgrado de GeografíaCentro de Investigaciones en Geografía Ambiental, UNAMMoreliaMexico

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