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

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

doi:10.1016/j.crte.2005.08.007

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 journal › Article › peer-review

27 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 contribution	Middle Miocene peralkaline ignimbrites in the Hermosillo region (Sonora, Mexico): Geodynamic implications
Original language	French
Pages (from-to)	1421-1430
Number of pages	10
Journal	Comptes Rendus - Geoscience
Volume	337
Issue number	16
DOIs	https://doi.org/10.1016/j.crte.2005.08.007
State	Published - 1 Dec 2005

Keywords

Geochemistry
Geochronology
Gulf of California
Mexico
Petrology
Volcanism

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10.1016/j.crte.2005.08.007

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title = "Ignimbrites hyperalcalines d'ǎge Mioc{\`e}ne moyen, dans la r{\'e}gion d'Hermosillo (Sonora, Mexique)",

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.",

keywords = "Geochemistry, Geochronology, Gulf of California, Mexico, Petrology, Volcanism",

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doi = "10.1016/j.crte.2005.08.007",

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AU - Vidal Solano, Jesús

AU - Paz Moreno, Francisco A.

AU - Iriondo, Alexander

AU - Demant, Alain

AU - Cochemé, Jean Jacques

PY - 2005/12/1

Y1 - 2005/12/1

N2 - 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.

AB - 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.

KW - Geochemistry

KW - Geochronology

KW - Gulf of California

KW - Mexico

KW - Petrology

KW - Volcanism

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

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