Ignimbrites hyperalcalines d'ǎge Miocène moyen, dans la région d'Hermosillo (Sonora, Mexique)

Translated title of the contribution: Middle Miocene peralkaline ignimbrites in the Hermosillo region (Sonora, Mexico): Geodynamic implications

Jesús Vidal Solano, Francisco A. Paz Moreno, Alexander Iriondo, Alain Demant*, Jean Jacques Cochemé

*Corresponding author for this work

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

Scattered ignimbritic mesas crop out in the Hermosillo region (Sonora, Mexico). These rocks that have been dated at 12.5 Ma (Middle Miocene) have the petrography and chemical characteristics of comendites. Such a flare-up of peralkaline acidic volcanism, after a long period of subduction-related arc volcanism, emphasises an important change in the source of volcanism. It corresponds to the latest stage of continental extension prior to the marine invasion and the development of spreading centres in the Gulf of California.

Translated title of the contributionMiddle Miocene peralkaline ignimbrites in the Hermosillo region (Sonora, Mexico): Geodynamic implications
Original languageFrench
Pages (from-to)1421-1430
Number of pages10
JournalComptes Rendus - Geoscience
Volume337
Issue number16
DOIs
StatePublished - 1 Dec 2005

Keywords

  • Geochemistry
  • Geochronology
  • Gulf of California
  • Mexico
  • Petrology
  • Volcanism

Fingerprint Dive into the research topics of 'Middle Miocene peralkaline ignimbrites in the Hermosillo region (Sonora, Mexico): Geodynamic implications'. Together they form a unique fingerprint.

  • Cite this