A5008745005- Geology and Paleoclimatology Research
- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Geological formations and processes
- Geochemistry and Geologic Mapping
- Geological and Tectonic Studies in Latin America
- Landslides and related hazards
- Environmental and Cultural Studies in Latin America and Beyond
- Soil erosion and sediment transport
- High-pressure geophysics and materials
- Pleistocene-Era Hominins and Archaeology
- Geochemistry and Elemental Analysis
- Archaeology and ancient environmental studies
- Cryospheric studies and observations
- Geological and Geophysical Studies Worldwide
- Evolution and Paleontology Studies
- Aeolian processes and effects
- Paleontology and Stratigraphy of Fossils
- Hydrocarbon exploration and reservoir analysis
- Botany and Geology in Latin America and Caribbean
- Hydrology and Sediment Transport Processes
- Geomagnetism and Paleomagnetism Studies
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Electrical and Bioimpedance Tomography
- Precipitation Measurement and Analysis
Universidad Católica del Norte
2014-2023
Université de Rennes
2021
Centre National de la Recherche Scientifique
2021
Géosciences Rennes
2021
University of Concepción
2018
University of Chile
2003-2012
University of Antofagasta
2008
Pontificia Universidad Católica de Chile
2007
Institut de Recherche pour le Développement
2003
Université Toulouse III - Paul Sabatier
2003
Research Article| February 01, 2013 Slope and climate variability control of erosion in the Andes central Chile S. Carretier; Carretier 1Geosciences Environnement Toulouse, OMP, UPS, CNRS, IRD, Université de France Search for other works by this author on: GSW Google Scholar V. Regard; Regard R. Vassallo; Vassallo 2ISTerre, Savoie, 73376 Le Bourget du Lac, G. Aguilar; Aguilar 3Departamento Geología, Universidad Atacama, Copiapo, J. Martinod; Martinod Riquelme; Riquelme 4Departamento Ciencias...
The Chile Triple Junction (CTJ) episodically migrated northward during the past 14 Ma from 54°S to its present‐day position at 46°30′S, as different almost trench‐parallel spreading segments entered in subduction. This migration resulted opening of an asthenospheric window below Patagonia, inducing a disturbance regional mantle convection. On overriding plate, middle Miocene time corresponds major change central Patagonian basin dynamics, with transition subsidence generalized uplift....
Abstract Extreme high‐magnitude and low‐frequency storm events in arid zones provide the necessary runoff to entrain sediments from source areas therefore dictate linkages between hillslopes channels. Nevertheless, erosive impact of large storms remains difficult predict. Most uncertainty lies lack topographic change maps associated with single hydro‐meteorological events. Consequently, event‐based erosion models are poorly constrained their extrapolation over long time periods uncertain. In...
Abstract: Major fluvial incision (600–1000 m) affecting the Coastal Cordillera and Central Depression of northern Chile is analysed to evaluate supposed coeval uplift Altiplano and/or climatic changes in Atacama Desert. The timing beginning constrained by age deposition top. In north (18–19°S), this top corresponds gravels accumulated between 11.9 ± 0.6 Ma 8.3 0.5 Ma, which are genetically related semiarid climate an eastward poorly dissected parallel drainage network that developed 15.0...
Over recent decades, innovative quantitative methods have been developed to study the internal dynamics of river basins. Most these approaches assume stable or minimally drainage divide mobility (DDM), based on premise that rate network evolution is significantly faster—by several orders magnitude—than divides. However, studies challenge this assumption, showing Gilbert metrics can effectively measure DDM and reveal scenarios where divides shift more rapidly than...
Two methods to measure the diffusion coefficient of a species in liquid by optical interferometry were compared. The tested on 1.75 M NaCl aqueous solution diffusing into water at 26 °C. Results D = 1.587 × 10−9 m2 s−1 with first method and 1.602 second method. Monte Carlo simulation was used assess possible dispersion these results. standard uncertainties found be order 0.05 both methods. We that value obtained either is very sensitive magnification system, if slow measurement time does not...
Abstract The Centinela Mining District ( CMD ), Atacama Desert (northern Chile), includes several mid‐late Eocene porphyry Cu deposits that contains supergene mineralization and provides access to a record of gravel host syn‐sedimentary exotic mineralized bodies. By studying these gravels, we reconstruct the unroofing history constrain geomorphological conditions produced mineralization. We present an integrated study based on stratigraphic sedimentological data, lithology clast counts, 40...
Tributary-junction alluvial fans situated at the intersection of confined valleys with <100 km 2 tributary catchments are special interest to evaluate heterogeneous consequences extreme rainfall events in arid zones. These record episodic sedimentological behaviour hillslope response rainstorm within catchments, together influence on main fluvial systems. In this paper, we benefit from March 2015 event (23–26 2015), which produced 75–46 mm precipitation over four days southern portion...
ABSTRACT We quantify erosion rates in the higher sectors of Huasco Valley, Main Cordillera semi‐arid Andes Chile, using elevation differences between three successive geomorphic markers (pediments and paleo‐valleys) present day valley. Available Ar‐Ar ages Neogene pediments are used to estimate mean for periods (16 13 My, 8 following My). The landscape Valley is a transient state, as indicated by well‐preserved pediment surfaces interfluves, valleys deeply incised fluvial glacial scarped...
Abstract The effect of mean precipitation rate on erosion is debated. Three hypotheses may explain why the current and runoff be spatially uncorrelated: (1) topography has reached a steady state for which pattern determined by uplift pattern; (2) only depends weakly runoff; or (3) studied catchments are experiencing different transient adjustments to climate variations. In Chilean Andes, between 27°S 39°S, annual rates increase southwards from 0.01 2.6 m −1 but catchment averaged decadal...
Abstract The transitional character of climatic conditions confers great relevance to paleoclimate studies in the semiarid region where glacial and Holocene geomorphologic records are scarce. Here we present paraglacial fluvial evolution Turbio valley (30°S) using both field observations 14 C AMS chronology. Two key sites at uppermost show margins which likely formed during 17–12 ka Central Andean Pluvial Event earlier 37–27 episodes associated with advances reported elsewhere Andes....