TY - JOUR
T1 - Middle Miocene peralkaline ignimbrites in the Hermosillo region (Sonora, Mexico): Geodynamic implications
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. © 2005 Académie des sciences. Published by Elsevier SAS. All rights reserved.
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. © 2005 Académie des sciences. Published by Elsevier SAS. All rights reserved.
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U2 - 10.1016/j.crte.2005.08.007
DO - 10.1016/j.crte.2005.08.007
M3 - Article
SN - 1631-0713
SP - 1421
EP - 1430
JO - Comptes Rendus - Geoscience
JF - Comptes Rendus - Geoscience
ER -