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Hans Niemeyer R.,Hans Niemeyer F.,Virgilio Schiappacasse
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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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Hans Niemeyer,Carolina Castillo
Pág. 350 - 357
The southern part of the Mid-Permian Chinquilchoro pluton consits of two approximately concentric lithofacies: an A lithofacies, external melanocratic and a leucocratic internal B lithofacies. The A lithofacies is formed by quartz diorite and quartz monz...
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Hans Niemeyer Rubilar
Pág. 628 - 640
An Upper Cambrian-Ordovician (490-460 Ma) batholith crop out along the Cordón de Lila and Sierra de Almeida, in the Antofagasta region, northern Chile, which belongs to the Famatinian arc. Two plutonic rock types can be distinguished: granodiorites and m...
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Stefan Richter,Jens Götze,Hans Niemeyer,Robert Möckel
Pág. 386 - 396
In the present study a first found of agates in Chile is reported from the Cordón de Lila region in northern Chile. The agates occur as veins and lenses in altered Permian volcanic rocks. The rock composition is rhyodacitic/ dacitic consisting of a fine-...
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Gabriela Adriana Cisterna,Andrea F. Sterren,Hans R. Niemeyer
Pág. 626 - 638
The carbonate successions of the Cerro El Árbol and Cerros de Cuevitas formations in the central region of Antofagasta are herein studied. These stratigraphic units are characterized by an invertebrate marine fossil assemblage integrated by brachiopods, ...
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María Jose Palacios,Hans Niemeyer
Pág. 561 - 570
Cataclastic bands from the eastern border of Tambillo Pluton are studied. Two band systems are observed: one northeast and the other northwest in strike. The northeast system is the most conspicuous and its kinematic analysis shows dextral displacement. ...
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Hans Niemeyer,Carlos Urrutia
Pág. 37 - 50
The north-south trending Cordillera de Domeyko Fault System in northern Chile considered herein is parallel to the Peru-Chile trench. The displacement history of the Sierra de Varas Fault, a master fault of the mentioned system, was examined in detall in...
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Hans Niemeyer,Ana Maria Zavattieri,Sara Ballent,Alba Zamuner,Oscar Gallego
In this contribution, we present a reassessment of the Pular Formation age (Sierra de Almeida, Antofagasta) that in previous papers was attributed to either the Late Paleozoic or Triassic. At Quebrada del Medio, the Pular Formation includes a 379-meter-t...
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Javier Gonzalez,Hans Niemeyer,Juan L. Benedetto,Edsel D. Brussa
Pág. 277 - 290
The Cordón de Lila is located immediately to the south of the Salar de Atacama, in northern Chile. The geology of the Cordón de Lila is characterized by extensive outcrops of Early Paleozoic volcanic and sedimentary rocks (Cordón de Lila Igneous and Sedi...
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Rodrigo Gonzalez,Hans Niemeyer
Pág. 23 - 48
The interaction between basic and acid magmas has been widely recorded in batholiths and plutons from magmatic arcs. The Sierra de Varas Pluton (SVP), a zoned elliptical granitic body emplaced during the Carboniferous-Permian boundary (~300 Ma), and expo...
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Hans Niemeyer,Marcelo Nava,Ivan Soto
Pág. 3 - 18
The processes associated with the interaction between the Pinchal Granodiorite (PG) and the kilometric Cerro Negro Xenolith (KCNX) are studied. The PG was cooled during the Late Carboniferous, whereas the age of the KCNX remain until now unknown. The KCN...
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Hans Niemeyer,Hector Berrios,Maria Dolores Ruiz Cruz
Pág. 3 - 18
The cataclasites here studied represent exhumed fault zones, which form long and narrow interlaced fringes striking northwest and cross-cutting Paleozoic rocks in the Domeyko Cordillera. The contact relationships as well as whole rock K-Ar determinations...
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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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Hans Niemeyer
Pág. 159 - 174
The Sierra Castillo Fault and its associated mesoscopic structures were studied at Quebrada del Carrizo. Here the fault juxtaposes Triassic and Paleozoic rocks on the east with Bajocian rocks on the west. The Sierra Castillo Fault serves as a master faul...
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Hans Niemeyer
Pág. 159 - 174
The Sierra Castillo Fault and its associated mesoscopic structures were studied at Quebrada del Carrizo. Here the fault juxtaposes Triassic and Paleozoic rocks on the east with Bajocian rocks on the west. The Sierra Castillo Fault serves as a master faul...
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Hans Niemeyer,Raul Venegas,Carlos R. Gonzalez,Florencio G. Acenolaza
Pág. 123 - 143
RESUMEN. Los terrenos paleozoicos del Salar de Navidad, conocidos como 'Estratos del Salar de Navidad', se han subdividido en dos formaciones de distintas caracteristicas litologicas, edad, ambiente deposicional y significado tectonico: Formacion Sierra ...
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Hans Niemeyer,Felipe Urzua,Claudia Rubinstein
Pág. 25 - 43
RESUMEN. El estudio detallado de seis columnas estratigraficas en el lugar-tipo de la Formacion Zorritas, en Sierra Almeida, alta cordillera de Antofagasta, permite dividir esta sucesion en tres miembros. El Miembro Inferior consiste en cuarzoarenitas co...
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Hans Niemeyer,Raul Venegas,Carlos R. Gonzalez,Florencio G. Acenolaza
Pág. 123 - 143
RESUMEN. Los terrenos paleozoicos del Salar de Navidad, conocidos como 'Estratos del Salar de Navidad', se han subdividido en dos formaciones de distintas caracteristicas litologicas, edad, ambiente deposicional y significado tectonico: Formacion Sierra ...
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Hans Niemeyer,Felipe Urzua,Claudia Rubinstein
Pág. 25 - 43
RESUMEN. El estudio detallado de seis columnas estratigraficas en el lugar-tipo de la Formacion Zorritas, en Sierra Almeida, alta cordillera de Antofagasta, permite dividir esta sucesion en tres miembros. El Miembro Inferior consiste en cuarzoarenitas co...
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