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José Luis Carrasco,Hans Niemeyer
Pág. 577 - 591
The El León pluton, located in the Cordón de Lila in the Precordillera of the Antofagasta region, Chile, is an intrusive body emplaced in the famatinian magmatic arc in the southwestern margin of Gondwana during the Darriwilian (Middle Ordovician). It ha...
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Franti?ek Hrouda, Shah W. Faryad, ?árka Kubínová, Kry?tof Verner and Marta Chlupácová
A composite lamprophyre dyke from the Central Bohemian Dyke Swarm (Czech Republic) shows both indications of magma free flow (normal magnetic fabric with magnetic foliation and lineation parallel to the dyke plane) as well as those of forcefully driven m...
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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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Hans Niemeyer,Eduardo Lazcano,Claudio Aviles
Pág. 229 - 241
The Sierra de Varas Norte pluton is a tonalitic intrusive body with an elliptical shape on the horizontal, it has a 12 km long axis by a recostructed 8 km width. It has a funnel shape in vertical section and is calcalkaline in composition. It was emplace...
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Gabriel Gonzalez
Pág. 43 - 66
The Cerro Cristales Pluton, of late Jurassic-early Cretaceous age, is exposed in the Coastal Cordillera south of Antofagasta (24-25ºS). The pluton shows a petrographical and structural zonation, defined by a strongly foliated mainly tonalitic margin and ...
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Jorge Skarmeta
Pág. 207 - 227
ABSTRACT. Mechanism of emplacement, deformation and transition of dykes to sills in Jurassic and Cretaceous sediments in northern Chile. Thick sequences of marine Jurassic and Lower Cretaceous deposits are well exposed in the Andes of northern Chile. The...
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Jose A. Naranjo,Paula Cornejo
Pág. 61 - 72
RESUMEN. El volcan Chaco se ubica en el borde occidental de la cadena volcanica andina cenozoica del norte de Chile (25°27'S; 69°02'W). Constituye una estructura volcanica compuesta, de edad miocena (15-17 Ma), cuya altura actual llega a 5.045 m s.n.m. S...
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