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Neotectonic controls and stream piracy on the evolution of a river catchment: a case study in the Agua de la Peña River basin, Western Pampean Ranges, Argentina

Neotectonic controls and stream piracy on the evolution of a river catchment: a case study in the... Purpose The La Peña River basin is located to the northeast of the province of San Juan, and crosses from east to west, the entire northern portion of the sierra de Valle Fértil, in Western Pampean Ranges. The strong relief of the mountain range is attributed to neotectonic activity of the NW trending Valle Fértil fault. The purpose of this study is to interpret the geological control on the dynamic drainage organization and the relevant neotectonic tilt due to the above-mentioned fault and to the NE trending El Alto fault. In addition, to identify stream piracy due to neotectonic activity of the Valle Fértil and El Alto faults in this river basin. Method We analyze the influence of tectonics in the evolution and shaping up of the present day Agua de La Peña River drainage basin, using geomorphic indices and markers. Several morphotectonic parameters obtained for the Agua de La Peña River basin allow us to determine the inference of tectonic deformation along the river profile. The regional morphometric analysis relies on four topographical swath profiles to identify several regional topographic features and anomalies. We examine the main river channel and tributaries in terms of their longitudinal profiles and knickpoints distribution in http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Iberian Geology Springer Journals

Neotectonic controls and stream piracy on the evolution of a river catchment: a case study in the Agua de la Peña River basin, Western Pampean Ranges, Argentina

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References (91)

Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer International Publishing AG, part of Springer Nature
Subject
Earth Sciences; Earth Sciences, general; Geology; Structural Geology
ISSN
1698-6180
eISSN
1886-7995
DOI
10.1007/s41513-018-0052-8
Publisher site
See Article on Publisher Site

Abstract

Purpose The La Peña River basin is located to the northeast of the province of San Juan, and crosses from east to west, the entire northern portion of the sierra de Valle Fértil, in Western Pampean Ranges. The strong relief of the mountain range is attributed to neotectonic activity of the NW trending Valle Fértil fault. The purpose of this study is to interpret the geological control on the dynamic drainage organization and the relevant neotectonic tilt due to the above-mentioned fault and to the NE trending El Alto fault. In addition, to identify stream piracy due to neotectonic activity of the Valle Fértil and El Alto faults in this river basin. Method We analyze the influence of tectonics in the evolution and shaping up of the present day Agua de La Peña River drainage basin, using geomorphic indices and markers. Several morphotectonic parameters obtained for the Agua de La Peña River basin allow us to determine the inference of tectonic deformation along the river profile. The regional morphometric analysis relies on four topographical swath profiles to identify several regional topographic features and anomalies. We examine the main river channel and tributaries in terms of their longitudinal profiles and knickpoints distribution in

Journal

Journal of Iberian GeologySpringer Journals

Published: Apr 4, 2018

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