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Gustavo W. Bertotto, Maurizio Mazzucchelli, Tommaso Giovanardi, Rommulo V. Conceiçao, Alberto Zanetti, Manuel E. Schilling, Mauro I. Bernardi, Alexis D. Ponce, Tiago Jalowitzki, Fernanda Gervasoni and Anna Cipriani
Huanul is a shield volcano with several lava flows hosting mantle xenoliths erupted during the Pleistocene (0.84 ± 0.05 Ma). It is located in the southern part of the Payenia Volcanic Province, which is among the largest Neogene-Quaternary volcanic provi...
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José Cabello
Pág. 1 - 23
A review of gold and gold bearing base metals deposits in Chile, indicate the existence of at least six different type of ore deposits, most largely formed during the Cenozoic with predominance in the Miocene. Mesozoic deposits are common but less releva...
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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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Gary S. Michelfelder, Todd C. Feeley, Alicia D. Wilder and Erik W. Klemetti
To better understand the origin of across-strike K2O enrichments in silicic volcanic rocks from the Andean Central Volcanic Zone, we compare geochemical data for Quaternary volcanic rocks erupted from three well-characterized composite volcanoes situated...
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Martín Turienzo,Luis Dimieri,Cristina Frisicale,Vanesa Araujo,Natalia Sanchéz
Pág. 317 - 357
In the Argentinean side of the Andes at 34°40?S, the Cenozoic Andean orogeny produced the thick-skinnedMalargüe fold-and-thrust belt and the easternmost basement uplift of the Cordillera Frontal. Integrating balanced structuralcross-sections with previou...
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Christian Creixell,Miguel angel Parada,Diego Morata,Paulina Vasquez,Carlos Perez de Arce,Cesar Arriagada
Pág. 37 - 63
The Middle-Late Jurassic mafic dike swarms of central Chile between 33º and 33º45'S register the tectonic activity of the contemporaneous arc represented by the Coastal batholith. These dike swarms evidence alternate episodes of transtension and transpre...
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Felipe Espinoza,Diego Morata,Mireille Polve,Yves Lagabrielle,Rene Maury,Aude de la Rupelle,Christele Guivel,Joseph Cotten,Herve Bellon,Manuel Suarez
Pág. 300 - 328
We presenta chronological (K-Ar), petrologic and geochemical study (major and trace elements, SrNd isotopes) ofMiddle Miocene (ca. 16-14 Ma) calc-alkaline rocks (basalts to andesites) extruded in the present-day back-arc region ofCentral Patagonia (Zebal...
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Constantino Mpodozis,Richard Allmendinger
Pág. 167 - 197
ABSTRACT. Large scale Cretaceous extensional tectonics in the Andes of northern Chile (Puquios-Sierra Fraga, 27°S). Extensional structures are commonly inferred, but seldom observed or described in the Andean Orogen. In the Andes of Northern Chile, the S...
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Luis Ribba,Constantino Mpodozis,Francisco Herve,Carlo Nasi,Ramon Moscoso
Pág. 129 - 149
RESUMEN. En el valle del Transito, al este de Vallenar (29°S) afloran rocas paleozoico-triasicas, metamorficas e intrusivas. Las mas antiguas son ortoneises granodioriticos, de probable edad silurica (Neises de La Pampa, NPL; isocrona Rb-Sr, roca total, ...
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