Results 61 to 70 of about 21,373 (215)

A uniform isotopic and chemical signature of dust exported from Patagonia: Rock sources and occurrence in southern environments [PDF]

open access: yes, 2007
Patagonia is considered to be the most important source of dust from South America that is deposited in surrounding areas, and we present here a systematic Sr and Nd isotopic study of sediment currently being exported.
Brunet, Frédéric   +3 more
core   +3 more sources

Diagnóstico socio-ambiental para un desarrollo sustentable de la Puna Meridional Argentina, Localidad de Antofagasta de la Sierra, Catamarca [PDF]

open access: yesAntropólogos Iberoamericanos en Red, 2008
Se presenta un diagnóstico socio-ambiental realizado en la comunidad de Antofagasta de la Sierra, Provincia de Catamarca, Argentina, siendo tomados en consideración las unidades sociales de producción, los rebaños, las pasturas disponibles y los patrones
Liliana M. Manzi
doaj   +1 more source

The large-scale surface uplift in the Altiplano-Puna region of Bolivia: A parametric study of source characteristics and crustal rheology using finite element analysis [PDF]

open access: yes, 2013
This paper focuses on the driving mechanism behind a 70 km wide region of ground uplift centered on Uturuncu volcano, in the Altiplano-Puna region of southern Bolivia.
del Potro, Rodrigo   +2 more
core   +2 more sources

The photochemical inheritance of Eduardo Lissi and Juan Grotewold and the intersystem crossings with other inheritances

open access: yesPhotochemistry and Photobiology, Volume 101, Issue 4, Page 790-832, July/August 2025.
Eduardo Lissi, Dorita Adamo‐Lissi and Juan Grotewold in Aberystwyth, Wales, winter 1961. Upon their return to Buenos Aires in 1963, with their PhD degrees, Lissi and Grotewold started a Chemical Kinetics and Photochemistry group in the School of Sciences (University of Buenos Aires).
Silvia E. Braslavsky   +1 more
wiley   +1 more source

Philodryas trilineata (Argentinean mousehole snake). Diet [PDF]

open access: yes, 2013
Philodryas trilineata is a large (maximum length = 200 cm) species endemic to the Monte biogeographic region in western Argentina (Giraudo and Scrocchi 2002. Smithson. Herpetol. Inform. Serv. 132: 1-53). The diet of P.
Alvares, Diego Janish   +3 more
core  

Pleistocene mafic volcanoes in the Puna–Cordillera Oriental boundary, NW-Argentina

open access: yesJournal of Volcanology and Geothermal Research, 2006
Abstract Los Gemelos and El Saladillo are both monogenetic, strombolian, basaltic–shoshonitic volcanoes that constitute the easternmost recognized examples of mafic Plio-Quaternary volcanism in the southern Central Andes. Two regional faults delimit the borders of the Calchaqui valley, as thrusts with opposite vergence: the eastern Calchaqui fault ...
Guzman, Silvina Raquel   +2 more
openaire   +2 more sources

Ultraconserved element (UCE) phylogenomics illuminates the evolutionary history and biogeography of Dorymyrmex pyramid ants

open access: yesSystematic Entomology, Volume 50, Issue 2, Page 325-348, April 2025.
A newly expanded UCE phylogeny of Dorymyrmex robustly confirms the major lineages and recommends a new scheme of four major species groups. The asymmetrical, amphitropical distribution of Dorymyrmex was likely created by a single dispersal event across the Isthmus of Panama before the traditional closure date of 3 Mya.
Jill T. Oberski
wiley   +1 more source

First notice of Therion from South America with description of two new species from Argentina and Bolivia (Hymenoptera: Ichneumonidae) [PDF]

open access: yes, 1999
Therion Curtis (Ichneumonidae: Anomalinae) has a nearly cosmopolitan geographic distribution but has not previously been recorded from South America. In most Therion the tarsal claws are simple or have only a few inconspicuous teeth near the base.
Porter, Charles C.
core  

Liophis ceii [PDF]

open access: yes, 2008
Number of Pages: 2Integrative BiologyGeological ...
Dixon, James R., Tipton, Bob L.
core   +1 more source

Rock Glacier Kinematics in the Valles Calchaquíes Region, Northwestern Argentina, From Multi‐Temporal Aerial and Satellite Imagery (1968–2023)

open access: yesPermafrost and Periglacial Processes, Volume 36, Issue 1, Page 123-136, January/March 2025.
ABSTRACT In semiarid mountain ranges, rock glaciers constitute an important part of the periglacial environment. However, quantitative data on the state of rock glacier activity remain scarce. Here, we derive kinematic information on rock glaciers located in the Valles Calchaquíes region (24–25° S) in Argentina from optical feature tracking in ...
Jan Henrik Blöthe   +3 more
wiley   +1 more source

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