Results 151 to 160 of about 892 (188)

Análisis de las relaciones de contacto entre los dominios Cenozoico y Mesozoico de la Cordillera Principal de Chile Central (33° -34°S)

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Waveform inversion and focal mechanisms of two weak earthquakes in Cordillera Principal (Argentina) between 35° and 35.5° S [PDF]

Journal of South American Earth Sciences, 2016
Abstract Only few (six) focal mechanism, in CMT Catalog, have been so far known for intraplate shallow events in the Andean chain close to Chile–Argentina state border at latitudes ∼35° S. We add two more mechanisms, depths and moment magnitudes by carefully analyzing full waveforms of weak events recorded by broad-band stations of the Chile ...
Jiří Zahradník, Silvina Nacif, Silvana Spagnotto   +2 more
exaly   +3 more sources

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The Mercedario rift system in the principal Cordillera of Argentina and Chile (32° SL)

Journal of South American Earth Sciences, 1999
Abstract Recent studies carried out in the High Andes of central-western Argentina in the provinces of San Juan and Mendoza have established its stratigraphic and structural evolution. This paper presents new data on the Triassic–Early Jurassic rift system, the depositional sequences, and a synthesis of the tectonic evolution of the region, along ...
VÍCTOR A Ramos
exaly   +2 more sources

The relationship between Cenozoic shallow igneous bodies and thrust systems of the mountain front of the Cordillera Principal, Mendoza province, Argentina

Journal of South American Earth Sciences, 2019
Fil: Araujo, Vanesa Soledad. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Bahia Blanca. Instituto Geologico del Sur. Universidad Nacional del Sur. Departamento de Geologia.
V Araujo, Natalia Sanchez, Martin Turienzo   +2 more
exaly   +3 more sources

Fission track thermochronology of Neogene plutons in the Principal Andean Cordillera of central Chile (33-35°S): Implications for tectonic evolution and porphyry Cu-Mo mineralization [PDF]

Andean Geology, 2009
Apatite fission track data for Miocene plutons of the western slope of the Principal Andean Cordillera in central Chile (33-35°S) define a distinct episode of enhanced crustal cooling through the temperature range of the apatite partial annealing zone (~125-60°C) from about 6 to 3 Ma.
FRANCISCO Munizaga, Marcos Zentilli, Reynaldo Charrier   +2 more
exaly   +5 more sources

El Cenozoico del alto río Teno, Cordillera Principal, Chile central: estratigrafía, plutonismo y su relación con estructuras profundas [PDF]

Andean Geology, 2010
The Cenozoic of the upper Teno River, Cordillera Principal, Central Chile: stratigraphy, plutonism and their relation with deep structures. The Cenozoic geologic evolution of the central part of the Cordillera Principal at ~35°S, is intimately related to the geodynamic evolution of deep crustal structures, which during different stages con- trolled the
JOSÉ Piquer, Reynaldo Charrier, Gonzalo Yanez   +2 more
exaly   +4 more sources

A New Tectonic Model for the Contact Relationships of Mesozoic and Cenozoic Domains in the Principal Cordillera, Central Chile (33°–34°S)

Tectonics
Abstract The origin of the contact between Cenozoic rocks of the Western Principal Cordillera (WPC) and Mesozoic rocks of the Eastern Principal Cordillera (EPC) in the Chilean Andes at 33°–34°S has been debated for several years. Most authors interpret this boundary as a regional‐scale inverted fault that, during the early Miocene ...
Alfonso Encinas, N Henriquez, W Stinnesbeck   +2 more
exaly   +3 more sources

Architecture, Kinematics, and Tectonic Evolution of the Principal Cordillera of the Andes in Central Chile (∼33.5°S): Insights From Detrital Zircon U‐Pb Geochronology and Seismotectonics Implications

Tectonics, 2021
AbstractWe assess the role of inherited structures on the Meso‐Cenozoic tectonic evolution of the main Andean Cordillera in central Chile (33°30′S‐34°S). Based on extensive field mapping, U‐Pb geochronology and palinspastic restorations along the Yeso and Volcán river valleys, we propose a tectono‐stratigraphic model for the evolution of a hybrid fold ...
Verónica Mardones, Matías Peña, Sebastián Pairoa, Jean‐Baptiste Ammirati, Mathieu Leisen   +4 more
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Late Paleozoic to Early Jurassic tectonic development of the high Andean Principal Cordillera, El Indio Region, Chile (29–30°S)

Journal of South American Earth Sciences, 1999
Abstract Regional mapping (1:50,000) and U-Pb and K-Ar geochronology in the El Indio region refines the knowledge of the distribution, lithostratigraphy, and age of the sedimentary, volcanic, and intrusive rocks that comprise the regionally extensive Pastos Blancos Group which is equivalent to the Choiyoi Group of the Argentine Frontal Cordillera ...
Mark W. Martin, Jorge Clavero R, Constantino Mpodozis M   +2 more
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Measuring the topography and motion of rock glaciers in the Cordillera Principal, Argentina

2018
GPS and digital photogrammetry were used to obtain topographic and motion data for the El Altar, QDM, and Los Azules Rock Glaciers in the High Dry Andes of Argentina. A total of 21 survey stations (8 at El Altar, 3 at QDM, and 10 at Los Azules) were monitored between AD 2010 and 2017 at various intervals as allowed by funding and weather conditions at ...
openaire   +2 more sources