Muestra métricas de impacto externas asociadas a la publicación. Para mayor detalle:
| Indexado |
|
||||
| DOI | 10.1016/J.JSG.2016.05.008 | ||||
| Año | 2016 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
The evolution of the Main Cordillera of Central Chile is characterized by the formation and subsequent inversion of an intra-arc volcano-tectonic basin. The world's largest porphyry Cu-Mo deposits were emplaced during basin inversion. Statistically, the area is dominated by NE- and NW-striking faults, oblique to the N-striking inverted basin-margin faults and to the axis of Cenozoic magmatism. This structural pattern is interpreted to reflect the architecture of the pre-Andean basement. Stratigraphic correlations, syn-extensional deposits and kinematic criteria on fault surfaces show several arc-oblique structures were active as normal faults at different stages of basin evolution. The geometry of syntectonic hydrothermal mineral fibers, in turn, demonstrates that most of these structures were reactivated as strike-slip +/- reverse faults during the middle Miocene - early Pliocene. Fault reactivation age is constrained by Ar-40/Ar-39 dating of hydrothermal minerals deposited during fault slip. The abundance and distribution of these minerals indicates fault-controlled hydrothermal fluid flow was widespread during basin inversion. Fault reactivation occurred under a transpressive regime with E- to ENE-directed shortening, and was concentrated around major plutons and hydrothermal centers. At the margins of the former intra-arc basin, deformation was largely accommodated by reverse faulting, whereas in its central part strike-slip faulting was predominant. (C) 2016 Elsevier Ltd. All rights reserved.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | PIQUER-GARDNER, JOSE MIGUEL | Hombre |
Univ Tasmania - Australia
Universidad Austral de Chile - Chile University of Tasmania - Australia |
| 2 | Berry, Ron F. | Hombre |
Univ Tasmania - Australia
University of Tasmania - Australia |
| 3 | Scott, Robert J. | Hombre |
Univ Tasmania - Australia
University of Tasmania - Australia |
| 4 | Cooke, David R. | Hombre |
Univ Tasmania - Australia
University of Tasmania - Australia |
| Fuente |
|---|
| Comisión Nacional de Investigación Científica y Tecnológica |
| Comisión Nacional de Investigación CientÃfica y Tecnológica |
| Becas Chile scholarship from Conicyt |
| AMIRA |
| AMIRA project "Enhanced Geochemical Targeting in Magmatic-Hydrothermal Systems" |
| Agradecimiento |
|---|
| Part of this work is the result of a PhD study by the senior author at the University of Tasmania, which was supported by a Becas Chile scholarship from CONICYT (grant number 72110368) and by research funding from the AMIRA P1060 project "Enhanced Geochemical Targeting in Magmatic-Hydrothermal Systems". Codelco and all the sponsors of the AMIRA P1060 project are acknowledged for allowing the publication of this work. Adele Seymon from AMIRA International is particularly acknowledged for facilitating the publication of this research. Thanks also to all research team members of the AMIRA P1060 project for their invaluable insights during the course of this study. |
| Part of this work is the result of a PhD study by the senior author at the University of Tasmania, which was supported by a Becas Chile scholarship from CONICYT (grant number 72110368 ) and by research funding from the AMIRA P1060 project “Enhanced Geochemical Targeting in Magmatic-Hydrothermal Systems”. Codelco and all the sponsors of the AMIRA P1060 project are acknowledged for allowing the publication of this work. Adele Seymon from AMIRA International is particularly acknowledged for facilitating the publication of this research. Thanks also to all research team members of the AMIRA P1060 project for their invaluable insights during the course of this study. |