Producción CyT
Artículo
Autoría
FOLGUERA TELICHEVSKY, ANDRES
;
Bottesi, G.
;
Duddy, I.
;
Martin Gonzalez, F.
;
ORTS, DARIO LEANDRO
;
SAGRIPANTI, LUCIA
;
Rojas Vera, Emilio Agustin
;
RAMOS, VICTOR ALBERTO
Fecha
2015
Editorial y Lugar de Edición
Elsevier
Revista
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES,
vol. 64
(pp. 381-398)
Elsevier
Resumen
Información suministrada por el agente en
SIGEVA
Apatite fission-track analysis performed on eighteen Mesozoic sediment samples of the Neuquén Basin from the Southern Central Andes orogenic front between 35°30? and 37°S has revealed Campanian-Paleocene (75-55 Ma), late Eocene-early Oligocene (35-30 Ma) and middle Miocene (15-10 Ma) cooling episodes. Each cooling episode corresponds closely with major unconformities observed in the preserved sedimentary sequences, and is associated with kilometer-scale additional burial and subs...
Apatite fission-track analysis performed on eighteen Mesozoic sediment samples of the Neuquén Basin from the Southern Central Andes orogenic front between 35°30? and 37°S has revealed Campanian-Paleocene (75-55 Ma), late Eocene-early Oligocene (35-30 Ma) and middle Miocene (15-10 Ma) cooling episodes. Each cooling episode corresponds closely with major unconformities observed in the preserved sedimentary sequences, and is associated with kilometer-scale additional burial and subsequent exhumation. A similar degree of cooling is inferred from associated vitrinite reflectance data. Late Eocene-early Oligocene exhumation is recognized only near the eastern orogenic front adjacent to the foreland in the southernmost part of the study area and may be related partly to within-plate magmatism and associated extension in the Palaoco Basin. The Campanian-Paleocene and middle Miocene cooling episodes are recognized more widely in the fold and thrust belt and appear to coincide with periods of eastward arc expansion and mountain building processes.
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