Results 51 to 60 of about 1,863,720 (234)

Climate conditions on the South‐Iberian Palaeomargin during the latest Pliensbachian to early Toarcian: A mineralogical and geochemical study from hemipelagic deposits

open access: yesSedimentology, EarlyView.
ABSTRACT The integrated analysis of lithofacies, mineralogy and geochemistry of the hemipelagic marine succession exposed in La Cerradura section (South‐Iberian Palaeomargin) provides new information to characterise the palaeoenvironmental conditions during the latest Pliensbachian to early Toarcian, including the Jenkyns Event.
Chaima Ayadi   +4 more
wiley   +1 more source

Regional electrical structure of the Andean subduction zone in central Chile (35°–36°S) using magnetotellurics

open access: yesEarth, Planets and Space, 2017
A profile of broadband magnetotelluric stations was acquired between 2009 and 2016 at 35°–36°S in the Southern Volcanic Zone of the Chilean Andes to image the subduction zone and its relation with the volcanic arc at this latitude.
Valentina Reyes-Wagner   +3 more
doaj   +1 more source

Primeros datos cromoestratigráficos de las series evaporíticas del triásico superior de Valencia (España) [PDF]

open access: yes, 1982
El Triásico Superior del sector central valenciano de la Cordillera Ibérica presenta una facies germánica (Keuper) integrada por dos secuencias evaporíticas separadas por un episodio detrítico principal.
Ortí Cabo, Federico   +1 more
core   +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

Systematics of Marmosa Subgenus Micoureus With Emphasis in ‘rapposa’ Group (Didelphidae, Marmosini): Geographic Variation and Revalidation of M. budini

open access: yesZoologica Scripta, EarlyView.
ABSTRACT Micoureus is the most species‐rich subgenus within the genus Marmosa. Conflicting arrangements regarding the number of species comprising this subgenus have been proposed and the validity of M. budini has been debated. Here, we used an approach integrating genetic and morphological data were conducted to reanalyze the ‘rapposa’ group ...
Maria Clara Santos Ribeiro   +3 more
wiley   +1 more source

Rol del clima y la tectónica en la evolución geomorfológica de los Andes Semiáridos chilenos entre los 27-32°S Role of climate and tectonics in the geomorphologic evolution of the Semiarid Chilean Andes between 27-32°S

open access: yesAndean Geology, 2013
Un análisis morfométrico que considera la pendiente topográfica y la hipsometría, evidencia las diferencias longitudinales y latitudinales en el grado de madurez del relieve de la región andina entre los 27-32°S.
Germán Aguilar   +3 more
doaj  

Elevational variation in heart mass and suppression of hypoxia‐induced right ventricle hypertrophy in Andean leaf‐eared mice (Phyllotis)

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend In lowland mammals that ascend to high elevation, hypoxia‐induced changes in the pulmonary circulation can give rise to hypoxic pulmonary hypertension (HPH) and associated right‐ventricle (RV) hypertrophy. Andean mice with broad elevational ranges have greater heart mass relative to body size at higher elevations, but they ...
Naim M. Bautista   +9 more
wiley   +1 more source

Nota previa sobre el Pérmico de la Cordillera Ibérica y bordes del Sistema Central [PDF]

open access: yes, 1973
[ES] Se describen las principales características estratigráficas de varios afloramientos pérmicos de los bordes del Macizo Central y Cordillera Ibérica.
Hernando Costa, Santiago   +3 more
core   +1 more source

Morphometric analyses and new taxonomic circumscription of South American species of Flourensia (Asteraceae, Heliantheae, Enceliinae) [PDF]

open access: yes, 2018
Flourensia (Asteraceae, Heliantheae, Enceliinae) is an amphitropical genus of resinous subshrubs, shrubs and small trees with 13 North American and 20 South American species among which disagreement on the species limits of some members still exists.
Aagesen, Lone   +3 more
core   +1 more source

Decadal climate variability and increasing exposure of Chilean agriculture

open access: yesAgricultural &Environmental Letters, Volume 11, Issue 1, June 2026.
Abstract Central Chile has undergone a steady shift from traditional annual crops to fruit orchards and vineyards, and a decline in the area dedicated to annual crops. This transition coincides with a decrease in precipitation and an increase in temperature.
Diego Rivera   +5 more
wiley   +1 more source

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