Detrital zircon SHRIMP U-Pb age study of the Cordillera Darwin Metamorphic Complex of Tierra del Fuego : sedimentary sources and implications for the evolution of the Pacific margin of Gondwana [PDF]
The Cordillera Darwin Metamorphic Complex in the southernmost Andes includes a basement of probable Palaeozoic age, a mid-Jurassic and younger volcano-sedimentary cover, and a suite of Jurassic granites, all of which were jointly metamorphosed during the
Calderon, M. +6 more
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En este trabajo se considera la geología de las siguientes unidades morfoestructurales de Colombia: la cordillera Central, la cordillera Occidental, la Serranía de Baudó y las Depresiones interandinas del Cauca - Patía y Atrato - San Juan - Tumaco.
Alberto Jairo Álvarez
doaj +1 more source
Early Cambrian U-Pb zircon age and Hf-isotope data from the Guasayán pluton, Sierras Pampeanas, Argentina: implications for the northwestern boundary of the Pampean arc [PDF]
An Early Cambrian pluton, known as the Guasayán pluton, has been identified in the central area of Sierra de Guasayán, northwestern Argentina. A U?Pb zircon Concordia age of 533 ± 4 Ma was obtained by LA-MC-ICP-MS and represents the first report of ...
Alasino, Pablo Horacio +8 more
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Opposing shear senses in a subdetachment mylonite zone: Implications for core complex mechanics [PDF]
[1] Global studies of metamorphic core complexes and low‐angle detachment faults have highlighted a fundamental problem: Since detachments excise crustal section, the relationship between the mylonitic rocks in their footwalls and the brittle deformation
E. S. Platzman +8 more
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Nueva especie de rana (Atelopus) de Los Farallones de Cali, Cordillera Occidental de Colombia
Durante la realización de colecciones herpetológicas en el Departamento del Valle del Cauca, fue encontrada una especie no descrita de Atelopus (Anura: Bufonidae) en los farallones de Cali, a 2600 m de altura.
Kattan Gustavo
doaj +2 more sources
Se describen 3 especies nuevas de escarabajos del género Cryptocanthon Balthasar de los Andes colombianos: C. encenillensis sp. nov. y C. cephalopunctatus sp. nov. de la cordillera oriental, y C. mailinae sp. nov. de la cordillera occidental. Se proveen
Diego Esteban Martínez Revelo +2 more
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Middle to Late Miocene Contractional Deformation in Costa Rica Triggered by Plate Geodynamics [PDF]
Contractional deformation in Costa Rica is usually attributed to the subduction of the aseismic Cocos Ridge. In this work, we review the evidences for contraction in the middle to late Miocene, prior to the arrival of the Cocos Ridge at the Middle ...
Cascante, Monserrat +8 more
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Una nueva especie de Columnea (Gesneriaceae) hallada en un bosque premontano en el Parque Nacional Natural Las Orquídeas (Cordillera Occidental), en el departamento de Antioquia, en Colombia es descrita e ilustrada.
MARISOL AMAYA-MÁRQUEZ
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Balantiopteryx infusca is a small bat endemic to southwestern Colombia and northwestern Ecuador. We present a new locality for B. infusca on the western slope of the Cordillera Occidental, Valle del Cauca, Colombia.
Jorge Horacio Velandia Perilla +2 more
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Modelling of last hypothesis of climate change impacts on water resources in Sierra de las Cabras aquifer (Southern Spain) [PDF]
Having models that reflect the reality of a system operation becomes critical to the effec-tive management of water resources in a watershed, especially considering the different scenes of climate change predicted for the Mediterranean regions by the ...
Jiménez Fernández, Pedro +1 more
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