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Mostrando ítems 11-20 de 57
The composition of amphibole phenocrysts in Neogene mafic volcanic rocks from the Puna plateau: Insights on the evolution of hydrous back-arc magmas
(Elsevier Science, 2020-12-01)
In typical Andean arc magmas, amphibole appears as a phenocryst phase only after considerable differentiation. However, some near-primitive volcanic rocks (high-Mg andesites and basalts) from monogenetic centers in the ...
Xenolitos Ultramáficos en Lavas Máficas Neógenas de la Puna NorteUltramafic xenoliths in Neogene mafci lavas from northern Puna
(Asociación Geológica Argentina, 2016-04)
En este trabajo se describe por primera vez el hallazgo de xenolitos ultramáficos incluidos en andesitas basálticas y andesitasdel volcanismo monogenético neógeno de la Puna norte. Consisten en fragmentos angulosos de rocas ...
The Luingo caldera: The south-easternmost collapse caldera in the Altiplano–Puna plateau, NW Argentina
(Elsevier Science, 2010-07)
This article identifies the Pucarilla–Cerro Tipillas Volcanic Complex and its major eruptive source, the Luingo caldera (26° 10′S–66° 40′W). Detailed geological mapping, stratigraphic sections, facies analysis and correlations, ...
The thermo-mechanical state of the Andes in the Altiplano-Puna region: insights from Curie isotherm and effective elastic thickness determinationEl estado termo-mecánico de los Andes en la región del Altiplano-Puna a partir del cálculo de la profundidad de Curie y el espesor elástico
(Asociación Geológica Argentina, 2019-10)
Presentamos nuevos resultados de la distribución de temperatura en la corteza en la región del Atiplano-Puna y un nuevo modelo de espesor elástico para los Andes Centrales. El objetivo de este trabajo es determinar el ...
ZOOPLANKTON OF THE HIGHLAND BOGS OF PUTANA, A DESERT WETLAND OF THE HIGH PUNA, NORTHERN CHILE
(BRILL ACADEMIC PUBLISHERS, 2015)
Dynamics of caldera collapse during the Coranzulí eruption (6.6 Ma) (Central Andes, Argentina)
(Elsevier Science, 2019-04)
The Coranzulí caldera (23°00′ S ? 66°15′ W) is one of the least known caldera complexes in the eastern part of the Argentinian Altiplano-Puna plateau (Central Andes). It lies at the intersection of N S, NW-SE and NE-SW ...
Ground/satellite observations and atmospheric modeling of dust storms originating in the high Puna‐Altiplano deserts (South America): Implications for the interpretation of paleo‐climatic archives
(American Geophysical Union, 2013-05)
This study provides a detailed description of the sources, transport, dispersion, and deposition of two major dust events originating from the high‐altitude subtropical Puna‐Altiplano Plateau (15?26°S; 65?69°W) in South ...
“Como en ella jamás ha habido minas…” Minería y metalurgia en la Puna de Jujuy durante momentos prehispánicos tardíos“As there were never mines there…” Mining and metallurgy in the puna of Jujuy during late prehispanic times
(Sociedad de Antropología Argentina, 2014-12)
La Puna de Jujuy (Argentina) es una porción del altiplano surandino rica en minerales metalíferos, que ha sido señalada como probable fuente de metales para los habitantes prehispánicos locales y de las regiones circundantes. ...
Dust deposition tracks late-Holocene shifts in monsoon activity and the increasing role of human disturbance in the Puna-Altiplano, northwest Argentina
(Sage Publications Ltd, 2020-01-05)
The Puna-Altiplano plateau represents a regionally significant dust source, which is critically located at the nexus between the tropical and sub-polar synoptic systems that dominate the South American climate. Dust emissions ...
Hydro-climatological variability in Lagunas de Vilama System, Argentinean Altiplano-Puna Plateau, Southern Tropical Andes (22° S), and its response to large-scale climate forcings
(Elsevier, 2021-05)
The Altiplano-Puna Plateau holds several shallow lakes, which are very sensitive to climate changes. This work is focused on a high-altitude lake system called Lagunas de Vilama (LVS), located in a complex climatic transition ...