INVESTIGADORES
GREGORI Daniel Alfredo
artículos
Título:
Genetic evolution of Permo-Triassic Volcaniclastic sequences at the Quebrada del Telégrafo, Precordillera de Mendoza, Argentina
Autor/es:
STRAZZERE, L.; GREGORI, D.; DRISTAS, J.
Revista:
Gondwana Research
Editorial:
Elsevier
Referencias:
Lugar: Trivandium; Año: 2006 vol. 9 p. 485 - 499
Resumen:
Permo-Triassic volcanic rocks of the Choiyoi Group crop out at Quebrada de Santa Elena and del Telégrafo, Mendoza Precordillera, Argentina. 10 In this area, six volcanic events were generated through three volcanic stages that include collapse of voluminous Plinian columns associated toIn this area, six volcanic events were generated through three volcanic stages that include collapse of voluminous Plinian columns associated to 11 caldera pressurization and depressurization, emplacement of sub-volcanic bodies and dikes connected to depressurization of the magmaticcaldera pressurization and depressurization, emplacement of sub-volcanic bodies and dikes connected to depressurization of the magmatic 12 chamber and establishment of resurgent domes and lava associated to caldera collapse events.chamber and establishment of resurgent domes and lava associated to caldera collapse events. 13 Petrologic and geochemical data indicate increasing acidification toward younger events varying from dacitic to rhyodacitic and rhyoliticPetrologic and geochemical data indicate increasing acidification toward younger events varying from dacitic to rhyodacitic and rhyolitic 14 rocks. The lithofacial organization allows correlating with the Lower to Upper Permian Horcajo Formation described in the Valle del Río de losrocks. The lithofacial organization allows correlating with the Lower to Upper Permian Horcajo Formation described in the Valle del Río de los 15 Patos, San Juan province. Geochemical data suggests subduction-related arc magmatism in an extensional condition during Lower to UpperPatos, San Juan province. Geochemical data suggests subduction-related arc magmatism in an extensional condition during Lower to Upper 16 Permian.Permian.