Evento
Edades U-Pb en circones detríticos de las metasedimentitas del Cordón del Peñasco, Precordillera de Mendoza
Boedo, Florencia Lucila
; Naipauer, Maximiliano
; Perez Lujan, Sofia Beatriz
; Ariza, Juan Pablo
; Pimentel, Marcio; Vujovich, Graciela Irene
Tipo del evento:
Congreso
Nombre del evento:
XX Congreso Geológico Argentino
Fecha del evento:
07/08/2017
Institución Organizadora:
Asociación Geológica Argentina;
Título del Libro:
Actas del XX Congreso Geológico Argentino
Editorial:
Asociación Geológica Argentina
Idioma:
Español
Clasificación temática:
Resumen
In central-western Argentina, a belt of slope and deep marine metasedimentary rocks is associated with mafic and ultramafic bodies throughout the western margin of the Precordillera. The belt is assigned to the late Neoproterozoic-Early Devonian based on U-Pb data and fossil fauna. It is considered to represent the suture zone between the Cuyania -to the east- and the Chilenia -to the west- terranes. We present here the first U-Pb data on detrital zircons of metasedimentary rocks from the Cordón del Peñasco area, northern Precordillera of Mendoza. Two metasandstones from the same unit (Peñasco Formation) were collected at the eastern- and westernmost sectors of the study area. They yielded different zircon morphologies, population distributions and maximum depositional ages (534 Ma for the westernmost sample and 458 Ma for the easternmost one). The obtained results confirm that local stratigraphical scheme needs revision. They also confirm the existence of a basin which separated the Cuyania and the Chilenia terranes at early Cambrian times. Besides, thedifferent zircon populations registered reveal a change in provenance areas, which could be possibly related to the Ocloyic orogeny during middle-late Ordovician.
Palabras clave:
TERRENO CUYANIA
,
TERRENO CHILENIA
,
CÁMBRICO
,
ORDOVÍCICO
Archivos asociados
Licencia
Identificadores
Colecciones
Eventos(CIGEOBIO)
Eventos de CENTRO DE INVESTIGACIONES DE LA GEOSFERA Y BIOSFERA
Eventos de CENTRO DE INVESTIGACIONES DE LA GEOSFERA Y BIOSFERA
Eventos(IDEAN)
Eventos de INSTITUTO DE ESTUDIOS ANDINOS "DON PABLO GROEBER"
Eventos de INSTITUTO DE ESTUDIOS ANDINOS "DON PABLO GROEBER"
Eventos(OCA CIUDAD UNIVERSITARIA)
Eventos de OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA
Eventos de OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA
Citación
Edades U-Pb en circones detríticos de las metasedimentitas del Cordón del Peñasco, Precordillera de Mendoza; XX Congreso Geológico Argentino; San Miguel de Tucumán; Argentina; 2017; 11-12
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