Results 21 to 30 of about 1,704,999 (235)

El volcanismo jurásico superior de la Formación Río Damas-Tordillo (33°-35,5°S): antecedentes su sobre petrogénesis, cronología, proveniencia e implicancias tectónicas [PDF]

open access: yes, 2014
Los depósitos continentales y volcánicos de la Formación Rio Damas-Tordillo, Jurásico Superior, representan un período restringido de sedimentación continental dentro del registro mayormente marino de la Cuenca Neuquina.
Calderón, Sergio   +7 more
core   +2 more sources

Anexo A - Dinámica temporal y espacial de una comunidad de aves en un gradiente altitudinal de la Cordillera Volcánica Central de Costa Rica, vertiente Caribe

open access: yesCaldasia, 2017
Especies de aves detectadas por TEAM en el transecto Volcán Barva, Cordillera Volcánica Central, Costa Rica, período 2004-2009.*Documento principal: http://dx.doi.org/10.15446/caldasia.v39n2 ...
Camilo Loaiza Gómez
doaj   +1 more source

Application of anisotropy of magnetic susceptibility (AMS) fabrics to determine the kinematics of active tectonics: examples from the Betic Cordillera, Spain, and the Northern Apennines, Italy

open access: yes, 2021
. The anisotropy of magnetic susceptibility (AMS) technique provides an effective way to measure fabrics and, in the process, interpret the kinematics of actively deforming orogens.
D. Anastasio   +7 more
semanticscholar   +1 more source

Revisiting the Andean butterfly Eryphanis zolvizora group (Lepidoptera, Nymphalidae) : one or several species? [PDF]

open access: yes, 2014
Eryphanis zolvizora (Hewitson, 1877) is a rare Andean endemic butterfly, described from Bolivia, which has been historically classified either as a unique species, or as part of a group of three allopatric species from Bolivia, Ecuador and Colombia.
Blandini, Patrick   +5 more
core   +3 more sources

Late Triassic (Rhaetian) conodonts and ichthyoliths from Chile [PDF]

open access: yes, 2000
The Late Triassic of the back arc Domeyko Basin, Chile is characterized by the onset of marine sedimentation that persisted throughout the rest of the Mesozoic.
Sansom, Ivan J.
core   +1 more source

Lithological and Hydrothermal Alteration Mapping of Epithermal, Porphyry and Tourmaline Breccia Districts in the Argentine Andes Using ASTER Imagery

open access: yesRemote Sensing, 2018
The area of interest is located on the eastern flank of the Andean Cordillera, San Juan province, Argentina. The 3600 km2 area is characterized by Siluro-Devonian to Neogene sedimentary and igneous rocks and unconsolidated Quaternary sediments ...
Francisco J. Testa   +3 more
doaj   +1 more source

The Cenozoic of the upper Teno River, Cordillera Principal, Central Chile: stratigraphy, plutonism and their relation with deep structures.

open access: yes, 2010
The Cenozoic geologic evolution of the central part of the Cordillera Principal at ~35°S, is intimately related to the geodynamic evolution of deep crustal structures, which during different stages controlled the deposition of volcanosedimentary ...
J. Piquer   +3 more
semanticscholar   +1 more source

The propagation of Love and Rayleigh waves in the Andean Region

open access: yesGeofísica Internacional, 1996
El patrón distintivo desde la fuente sísmicas de un campo irradiado de ondas sísmicas se modifica profundamente al pasar por una región irregular como la Cordillera de los Andes de América del Sur.
Lawrence A. Drake, Estela Minaya Ramos
doaj   +1 more source

Fluctuación poblacional de Ips calligraphus en pinares de la vertiente norte de la cordillera Central, República Dominicana

open access: yesNovitates Caribaea, 2022
El coleóptero Ips calligraphus Germar se ha convertido en el principal problema fitosanitario forestal de los pinares naturales y plantados en República Dominicana.
Alfredo Arangel Jiménez G.   +2 more
doaj   +1 more source

Establishing geothermometric constraints on the local geothermal gradients: Case study of the Eastern Cordillera Basin, Colombia

open access: yesGeodesy and Geodynamics, 2018
Geochemical analyses were performed on 170 coal bed-trapped groundwater samples from 97 underground mines located in the Eastern Cordillera Basin, Colombia. The waters analyzed in this paper are from exploited coal beds, located up to 0.73 km deep, which
Carlos A. Barrera   +2 more
doaj   +1 more source

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