Geomorphology of the Patagonian Volcanic Landscapes: Provinces of Neuquén (Northern Patagonia) and Santa Cruz (Southern Patagonia)

2018 ◽  
pp. 69-121 ◽  
Author(s):  
Elizabeth Mazzoni ◽  
Jorge Rabassa
Keyword(s):  
Santa Cruz ◽  
Northern Patagonia ◽  
Southern Patagonia

A new Gripopterygidae (Plecoptera) species from southern Patagonia

Zootaxa ◽  
2009 ◽  
Vol 2264 (1) ◽  
pp. 51-57 ◽  
Author(s):  
PABLO PESSACQ
Keyword(s):  
Instar Larva ◽  
Santa Cruz ◽  
Argentinean Patagonia ◽  
Southern Patagonia

The male, female, and last instar larva of Andiperlodes tehuelche n. sp., an apterous species of Gripopterygidae, are described from the Santa Cruz Province, Argentinean Patagonia.

Modiomytilus, a new mytilid bivalve from the Tertiary of southern Patagonia

1990 ◽  
Vol 64 (3) ◽  
pp. 377-382 ◽  
Author(s):  
Miguel Griffin
Keyword(s):  
New Species ◽  
Adductor Muscle ◽  
New Taxon ◽  
Santa Cruz ◽  
Southern Patagonia ◽  
Two New Species

Modiomytilus n. gen. is described from Tertiary sediments exposed in the southwestern corner of Santa Cruz province (Argentina). This large mytilid is characterized by its ornamentation of strong comarginal undulations, its smooth ligamentary ridge, and its relatively large anterior adductor muscle. Two new species are assigned to it: Modiomytilus argentinensis n. sp., from the Centinela Formation (Miocene) south of Lago Argentino, and Modiomytilus mercerati n. sp., from the Río Turbio Formation (Eocene) in Sierra Dorotea. Although other species belonging to this new taxon and previously referred to Mytilus have been described from Tertiary sediments in the region, none are known so far from rocks of comparable age outside Patagonia.

Climatically induced lake level changes during the last two millennia as reflected in sediments of Laguna Potrok Aike, southern Patagonia (Santa Cruz, Argentina)

2005 ◽  
Vol 33 (3) ◽  
pp. 283-302 ◽  
Author(s):  
Torsten Haberzettl ◽  
Michael Fey ◽  
Andreas L�cke ◽  
Nora Maidana ◽  
Christoph Mayr ◽  
...  
Keyword(s):  
Lake Level ◽  
Santa Cruz ◽  
Lake Level Changes ◽  
Southern Patagonia ◽  
The Last Two Millennia

scholarly journals Valve morphology of Didymosphenia geminata (Bacillariophyceae) from Santa Cruz and Tierra del Fuego provinces, Patagonia, Argentina.

2020 ◽  
Vol 55 (4) ◽  
Author(s):  
Noelia M. Uyua ◽  
Silvia E. Sala ◽  
Norma H. Santinelli ◽  
Alicia V. Sastre ◽  
Juan I. Cortés ◽  
...  
Keyword(s):  
Light And Electron Microscopy ◽  
Central Area ◽  
Point Of View ◽  
Tierra Del Fuego ◽  
Santa Cruz ◽  
Didymosphenia Geminata ◽  
Valve Morphology ◽  
Massive Growth ◽  
Southern Patagonia ◽  
Morphology And Morphometry

Background and aims: In 2013, blooms similar to those produced by Didymosphenia geminata (Lyngbye) M. Schmidt around the world, were detected in the Grande River basin, Tierra del Fuego province, and in 2014 in de las Vueltas River in Santa Cruz province. The aim of this paper is to analyze the valve morphology and morphometry of these materials to establish if they correspond to D. geminata or to other species of the genus that is producing the massive growth in southern Patagonia. M&M: Samples were collected at Grande River in 2013 and 2015 and, in de las Vueltas River in 2015 and 2016. Samples were analyzed with light and electron microscopy. For morphometric analyses 100 specimens from each sample were measured and statistical analyses were carried out using the R statistical package. Results: The studied populations have the same fine morphology described for other populations collected in Patagonia. Nevertheless, in some sampling sites from Santa Cruz province, we found a morphotype with a markedly smaller size, subcapitated poles, little marked constrictions of the poles, a broad central area (relative to cell size) and 1 to 3 stigmata, that was never reported in South America. Conclusions: The studied populations correspond to D. geminata ssp. geminata Metzeltin & Lange-Bertalot. From a morphological point of view the smaller morphotype present in Santa Cruz belongs to the same subspecies but can be easily misidentified during the routine monitoring programs carried out with light microscope due its size and valve outline.

Siltstone from Southern Patagonia: Its Source and Archaeological Artifact Distribution in Santa Cruz Province, Argentina

2015 ◽  
Vol 30 (3) ◽  
pp. 223-237 ◽  
Author(s):  
Juan Bautista Belardi ◽  
Gisela Cassiodoro ◽  
Rafael Goñi ◽  
Michael D. Glascock ◽  
Alejandro Súnico
Keyword(s):  
Santa Cruz ◽  
Archaeological Artifact ◽  
Southern Patagonia

scholarly journals Fronteras de la minería en la Patagonia sur Argentina

2020 ◽  
Vol 16 (32) ◽  
pp. 145
Author(s):  
Alejandro Fabián Schweitzer
Keyword(s):  
Social Consequences ◽  
Mountain Range ◽  
Global Dynamics ◽  
Santa Cruz ◽  
Neoliberal Reforms ◽  
Current State ◽  
Southern Patagonia ◽  
Commodification Of Nature ◽  
Cordillera De Los Andes ◽  
Metalliferous Mining

ResumenLa Patagonia sur es desde la década de 1990 territorio de expansión de la minería por parte de grandes capitales transnacionales. Con yacimientos a ambos lados de la cordillera de los Andes, se trata de una actividad inscrita en dinámicas globales de avance de las fronteras de mercantilización de la naturaleza, potenciada por reformas neoliberales. Luego de más de veinte años, los dispositivos que deberían apuntar a aprovechar la renta minera para mejorar las condiciones de reproducción de la población, muestran que estos objetivos no solo no se cumplieron sino que redundaron en empeoramiento de esta situación. En este trabajo se expone un marco para interpretar estos procesos, en un segundo momento se describe el estado actual de la minería en la Patagonia sur y en particular en la Provincia de Santa Cruz, y en tercer lugar algunas de las consecuencias sociales de los problemas ambientales provocados por la actividad así como el estado actual de las resistencias. Al fnalizar se aportan algunas reflexiones a modo de conclusión.Palavras clave: Producción del espacio. Fronteras. Mercantilización de la naturaleza. Minería metalífera. Hidrocarburos. Patagonia sur.BORDERS OF MINING IN SOUTH PATAGONIA ARGENTINAAbstractSince the 1990s, southern Patagonia has been a territory for the expansion of mining by large transnational capitals. With deposits on both sides of the Andes mountain range, it is an activity inscribed in global dynamics of advancing the frontiers of the commodification of nature, promoted by neoliberal reforms. After more than twenty years, the devices that should aim to take advantage of the mining income to improve the reproduction conditions of the population, show that these objectives were not only not fulfilled, but also led to a worsening of this situation. In this work a framework is presented to interpret these processes, in a second moment the current state of mining in Patagonia and in particular in the Province of Santa Cruz is described and in third place some of the social consequences of the environmental problems provoked by the activity as well as the current state of the resistances. When finalizing some reflections are contributed by way of conclusion.Keywords: Production of space. Borders. Commodification of nature. Metalliferous mining. hydrocarbons. Southern Patagonia.

Raw material circulation at broad scales in southern Patagonia (Argentina): The cases of the Chico and Santa Cruz River basins

2015 ◽  
Vol 375 ◽  
pp. 72-83 ◽  
Author(s):  
Nora Viviana Franco ◽  
Natalia Andrea Cirigliano ◽  
Lucas Vetrisano ◽  
Pablo Ambrústolo
Keyword(s):  
River Basins ◽  
Raw Material ◽  
Santa Cruz ◽  
Southern Patagonia ◽  
Santa Cruz River ◽  
Material Circulation
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