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Diego Palma,Sebastián Jovic,Luciano López,Diego Guido,Gerardo Páez,Facundo De Martino,Gustavo Sotarello,Pablo Rolando
Pág. 387 - 402
The Casposo District is located in the Cordillera Frontal, in the center-west of San Juan Province, Argentina. It is characterized by the presence of a low sulfidation epithermal system hosted in volcanic rocks of the Choiyoi Group, where the Mercado-Kam...
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Marcos Podesta,Gustavo Ortiz,Paola Orozco,Patricia Alvarado,Facundo Fuentes
Pág. 327 - 344
The Iglesia basin, in the San Juan Province, is the northern part of a Cenozoic piggy-back basin (the Iglesia-Calingasta-Uspallata basin), located above of the active flat-slab subduction zone of western Argentina. This basin is located between two mount...
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Isabel Méndez-Bedia,Gloria Gallastegui,Pedro Busquets,Silvia N. Césari,Carlos O. Limarino,Eva Prats,Raúl Cardó,Ferrán Colombo
Pág. 275 - 294
In the Argentinian Andes (Frontal Cordillera) the upper part of the late Carboniferous-early Permian San Ignacio Formation is made up of lacustrine-palustrine microbial carbonates and interbedded volcanic deposits. In this lacustrine-palustrine environme...
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Felipe Coloma, Ximena Valin, Verónica Oliveros, Paulina Vásquez, Christian Creixell, Esteban Salazar, Mihai Nicolae Ducea
Pág. 147 - 178
Permian to Triassic igneous rocks cropping out in the Coastal and Frontal cordilleras in northern Chile
between 28º00?S and 30º15?S have long been interpreted to represent products of magmatism related to an extensional
tectonic setting, either as the re...
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Stella Poma, Adriana Ramos, Vanesa D. Litvak, Sonia Quenardelle, Emma B. Maisonnave, Iris Díaz
Pág. 249 - 274
A Miocene to Pliocene (13 to 4.6 Ma) mostly pyroclastic sequence is exposed along the Iglesia Valley, to
the east of the former main volcanic arc. This area is a transitional region between Cordillera Frontal and Precordillera,
over the flat slab segment...
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Sebastian Rocher,Graciela Vallecillo
Pág. 589 - 625
The Permo-Triassic Choiyoi rhyolite province of Chile and Argentina is by its extension, volume and geological significance, the record of one of the most important magmatic events of the southwestern margin of Gondwana. However, aspects dealing with the...
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Stella Poma,Eduardo O. Zappettini,Sonia Quenardelle,Joao O. Santos,?Magdalena Koukharsky,Elena Belousova,Neal J. McNaughton
Pág. 267 - 292
We have carried out zircon U-Pb SHRIMP dating and Hf isotope determinations as well as geochemical analyses on three plutonic units of Gondwanan magmatism that crop out in NW Argentina. Two episodes of different age and genesis have been identified. The ...
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Pedro Busquets,Carlos Oscar Limarino,Raúl Cardó,Isabel Méndez-Bedia,Gloria Gallastegui,Ferrán Colombo,Nemesio Heredia,Silvia N. Césari
Pág. 172 - 195
This paper addresses the stratigraphic analysis of the Late Paleozoicsequence outcroping in the Sierra de Castaño area (Cordillera Frontal, San Juan Province, Argentina). In this region three major stratigraphic units have been recognized. The lower one ...
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Nemesio Heredia,Pedro Farias,Joaquín García-Sansegundo,Laura Giambiagi
Pág. 242 - 257
The Andean Paleozoic basement of the Cordón del Plata (Argentina) consists of two sets of rocks showingdifferent stratigraphy, structure and metamorphism. The lower one is represented by the pre-Carboniferous (Devonian?)Vallecitos beds. These rocks have ...
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Fenando Martínez,César Arriagada,Constantino Mpodozis,Matías Peña
Pág. 258 - 278
The Triassic and Jurassic tectonic history of northern Chile has been dominated by extension, althoughclear evidence about the nature and geometry of the extensional basins and subsequent inversion structures has beenadequately illustrated in only a few ...
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