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Featured researches published by Vanesa Araujo.


Tectonics | 2018

Tectonic Evolution of the Chos Malal Fold‐and‐Thrust Belt (Neuquén Basin, Argentina) From (U‐Th)/He and Fission Track Thermochronometry

Natalia Sánchez; Isabelle Coutand; Martín Turienzo; Fernando Oscar Lebinson; Vanesa Araujo; Luis V. Dimieri

In the southern central Andes at 37–38°S latitude, the Chos Malal fold-and-thrust belt (FTB), which results from the Late Cretaceous closure of the Neuquén Basin, has generated increasing interest because of its potential for hydrocarbon exploration. Using detailed field mapping, seismic reflection, and well data analysis, we have produced balanced cross sections, which combined with apatite and zircon (U-Th)/He, and fission track thermochronology from samples distributed along the FTB, bring new constraints on the chronology of the structural development of the Chos Malal FTB. Fully reset samples obtained from the Early Jurassic rocks at the bottom of the sedimentary sequence exposed in the Cordillera del Viento, a major basement-involved hinterland structure, permit to quantify its cooling rate from 5.4 ± 4.1 and 3.8 ± 3.2 °C/Ma between 70 and 55 Ma down to between 2.0 ± 1.3 and 1.3 ± 0.9 °C/Ma after 55 Ma until the present. Detrital apatite fission track ages from Late Jurassic and Early Cretaceous sandstones reveal that tectonically driven exhumation through basement-involved thrusting has occurred at ~15–7 Ma in both the inner and outer sectors of the FTB. Finally, the cooling and exhumation of the Las Yeseras-Pampa Tril basement-involved anticlines at the mountain front at ~9–7 Ma, slightly younger than previously assumed, suggests a normal sequence of faulting propagation. Our proposed thermostructural model of the Chos Malal FTB contributes to a better understanding of the tectonic evolution of this segment of the Andes.


Andean Geology | 2012

Cenozoic structural evolution of the Argentinean Andes at 34°40'S: A close relationship between thick and thin-skinned deformation

Martín Turienzo; Luis V. Dimieri; M. Cristina Frisicale; Vanesa Araujo; Natalia Sánchez


Journal of South American Earth Sciences | 2014

Tectonic repetitions of the Early Cretaceous Agrio Formation in the Chos Malal fold-and-thrust belt, Neuquén Basin, Argentina: Geometry, kinematics and structural implications for Andean building

Martín Turienzo; Natalia Sánchez; Luis V. Dimieri; Fernando Oscar Lebinson; Vanesa Araujo


Journal of South American Earth Sciences | 2015

Structural style of the Chos Malal fold and thrust belt, Neuquén Basin, Argentina: relationship between thick- and thin-skinned tectonics

Natalia Sánchez; Martín Turienzo; Fernando Oscar Lebinson; Vanesa Araujo; Isabelle Coutand; Luis V. Dimieri


Revista de la Asociación Geológica Argentina | 2014

EVOLUCIÓN DE LAS ESTRUCTURAS ANDINAS EN LA FAJA CORRIDA Y PLEGADA DE CHOS MALAL: INTERACCIÓN ENTRE EL BASAMENTO Y LA CUBIERTA SEDIMENTARIA DE LA CUENCA NEUQUINA

Natalia Sánchez; Martín Turienzo; Luis V. Dimieri; Vanesa Araujo; Fernando Oscar Lebinson


Tectonics | 2017

Retracted: Middle Miocene to Early Pliocene Contraction in the Chos Malal Fold-and-Thrust Belt (Neuquén Basin, Argentina): Insights From Structural Analysis and Apatite Fission-Tracks Thermochronology: Neogene Contraction in the Chos Malal FTB

Natalia Sánchez; Isabelle Coutand; Martín Turienzo; Fernando Oscar Lebinson; Vanesa Araujo; Luis V. Dimieri


Revista de la Asociación Geológica Argentina | 2010

Mecanismos de deformación en la transición milonitas/striped gneiss y milonitas/ ultramilonitas en las sierras de Azul, cratón del Río de la Plata, Buenos Aires

María C. Frisicale; Luis V. Dimieri; Vanesa Araujo; Jorge A. Dristras


Revista de la Asociación Geológica Argentina | 2015

GEOMETRIA Y CINEMÁTICA DE LAS ESTRUCTURAS TECTÓNICAS EN EL EXTREMO SEPTENTRIONAL DE LA FAJA CORRIDA Y PLEGADA DEL AGRIO, CUENCA NEUQUINA

Fernando Oscar Lebinson; Martín Turienzo; Natalia Sánchez; Vanesa Araujo; Luis V. Dimieri


Andean Geology | 2018

The structure of the northern Agrio fold and thrust belt (37°30’ S), Neuquén Basin, Argentina

Fernando Oscar Lebinson; Martín Turienzo; Natalia Sánchez; Vanesa Araujo; María Celeste D´Annunzio; Luis V. Dimieri


Tectonics | 2017

Retraction: Middle Miocene to Early Pliocene Contraction in the Chos Malal Fold‐and‐Thrust Belt (Neuquén Basin, Argentina): Insights from Structural Analysis and Apatite Fission‐Tracks Thermochronology

Natalia Sánchez; Isabelle Coutand; Martín Turienzo; Fernando Oscar Lebinson; Vanesa Araujo; Luis V. Dimieri

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Luis V. Dimieri

Universidad Nacional del Sur

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Martín Turienzo

Universidad Nacional del Sur

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Natalia Sánchez

Universidad Nacional del Sur

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María C. Frisicale

Universidad Nacional del Sur

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M. Cristina Frisicale

National Scientific and Technical Research Council

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