INCITAP   20787
INSTITUTO DE CIENCIAS DE LA TIERRA Y AMBIENTALES DE LA PAMPA
Unidad Ejecutora - UE
artículos
Título:
Quaternary evolution of the Cordillera Frontal piedmontbetween c. 33° and 34°S Mendoza, Argentina
Autor/es:
MARCELO ZÁRATE; ADRIANA MEHL; LAURA PERUCCA
Revista:
GEOLOGICAL SOCIETY OF LONDON SPECIAL PUBLICATION
Editorial:
Geological Society of London
Referencias:
Lugar: Londres; Año: 2014 vol. 399 p. 200 - 218
ISSN:
0305-8719
Resumen:
bstract: The piedmont of Cordillera Frontal between c. 338 and 348S (Mendoza, Argentina) is a highly populated area deeply modified by human activities, known as Valle de Uco. It is situated within the borderland region of the geological provinces of Cordillera Frontal and Cuyo basin. The landscape is dominantly composed of both erosional and depositional landforms made of fluvioaeolian deposits fractured and folded by tectonic processes together with some landforms of volcanic origin. Alluvial fans, related to several aggradational cycles of Quaternary age, are the most remarkable geomorphological units. Several tectonic features are present giving rise to conspicuous morphological features. Some of the streams are structurally controlled by faults while several drainage anomalies that indicate active tectonic processes have been identified. The Late Quaternary alluvial sequences, dominantly comprising sandy and silty deposits of volcaniclastic composition and secondarily metamorphic rocks, represent the fine-grained sedimentary facies of the fluvial systems accumulated in a distal fan environment. The alluvial deposits have been incised by several episodes of erosion since Pleistocene time