RESUMO -A Formação Malimán é parte de um conjunto de sedimentos de idade viseana que afloram na serra de Volcán (bacia de Río Blanco),
Tópico(s): Geological formations and processes
2006 - | Revista Brasileira de Paleontologia
Produção Nacional
Felipe Marcelo Alexandre, Carlos Augusto Sommer, Evandro Fernandes de Lima, Farid Chemale, Claudia A. Marsicano, Adriana Cecilia Mancuso, José Affonso Brod,
... Parque Provincial Ischigualasto - Vale de la Luna (norte da Província de San Juan - Argentina), permitiram a identificação e a caracterização de rochas hipabissais básicas subsaturadas em sílica e de afinidade alcalina. Este magmatismo é provavelmente relacionado com a reativação extensional de estruturas paleozóicas decorrentes da ruptura do supercontinente Gondwana. As rochas hipabissais do ...
Tópico(s): Geochemistry and Geologic Mapping
2009 - | Pesquisas em Geociências
Mercedes B. Prámparo, Sara Ballent, Oscar F. Gallego, Juan Pablo Milana,
Fil: Pramparo, Mercedes Beatriz. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto Argentino de Nivologia, Glaciologia y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivologia, Glaciologia y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivologia, Glaciologia y Ciencias Ambientales; Argentina
Tópico(s): Geological and Geophysical Studies Worldwide
2005 - Asociación Paleontológica Argentina | Ameghiniana
Resumen. En este trabajo se dan a conocer bivalvos provenientes de diferentes unidades de la sierra de Barreal. Se describen cinco especies, de las cuales una es nueva: Streblochondria sanjuanensis sp. nov., Nuculanella camachoi Gonzalez, Streblochondria stappenbecki(Reed), Streblochondriasp. y Streblopteriasp. A partir de las caracteristicas morfologicas identificables en cada taxon, se realizo el estudio del posible modo de vida y las correspondientes reconstrucciones hipoteticas de cada especie. ...
Tópico(s): Evolution and Paleontology Studies
2003 - Asociación Paleontológica Argentina | Ameghiniana
Tópico(s): Geological and Geophysical Studies Worldwide
1997 - | Revista española de micropaleontología
Roberto Ricardo Lech, Juan Pablo Milana, Aldo Luis Banchig,
The brachiopods from Casa de Piedra Formation are presented in this paper. This formation outcrops on top of the Tontal mountain range 20 km east of Hilario, Calingasta county, San Juan province. These are glacimarine deposits due to a progressive marine regression and consecutive regressive and transgressive events, which end in a stromatolitic structure, coquina and limestone deposits. We were able to locate five fossiliferous levels occurring along aproximately 400 m of thickness. The fossils ...
Tópico(s): Evolution and Paleontology Studies
1998 - Asociación Paleontológica Argentina | Ameghiniana
Nora Sabattini, Eduardo G. Ottone, Carlos L. Azcuy,
A new name, Lissocbonetes jacbalensis-Streptorhynchus inaequiomasus Zone (Late Carboniferous), is proposed for the previously known as intermediate fauna. The fossiliferous composition of severallocalities when: the mentioned zone appears is compared (Quebrada Larga, Tupe, El Imperial Pormations and equivalents). Two new species of gastropodos are described from the same zone.
Tópico(s): Mollusks and Parasites Studies
1990 - Asociación Paleontológica Argentina | Ameghiniana
Resumen. En este trabajo se dan a conocer los bivalvos provenientes de la Formacion La Capilla (Carbonifero) en los afloramientos situados a 300 metros al oeste de la localidad de Las Cambachas en la provincia de San Juan. Se describen tres especies: Phestia sp., Schizodus sp. y Oriocrassatella ? sp. A partir de las caracteristicas morfologicas identificables en cada taxon, se realiza el estudio del posible modo de vida y las correspondientes reconstrucciones hipoteticas de cada especie. Los bivalvos ...
Tópico(s): Geology and Paleoclimatology Research
2005 - Asociación Paleontológica Argentina | Ameghiniana
Viviana D. Barreda, Pedro Raúl Gutiérrez, Carlos O. Limarino,
A diverse and well preserved palynological assemblage is reported for the first time from the Upper section of the Serie del Yeso, San Juan province, Argentina. The assemblage is dominated by herbaceous and shrubby forms of the families Cyperaceae, Poaceae, Malvaceae, Sympocaceae, Asteraceae, Anacardiaceae and Ephedraceae which, on sedimentological and palynological grounds, may have developed in the surroundings of a lacustrine environment. Tree components and fems are very sparse. Fresh water ...
Tópico(s): Geology and Paleoclimatology Research
1998 - Asociación Paleontológica Argentina | Ameghiniana
Silvia N. Césari, Felisa Berkowski,
palynological systematic study ofthe Jejenes Formation (Upper Carboniferous), at Las Lajas Creek is presented. A diversified palynological assemblage incIuding rnicrospores, megaspores, pollen grains and acritarchs has been recognized. Twenty one samples were revised and 25 species are identified. The paleoenvironmental interpretation of the sequence is based on acritarch-leiosphere-to-spore ratios. These indicate a nearshore marine environment for the basal and middle parts of the sequence; the ...
Tópico(s): Paleontology and Stratigraphy of Fossils
1997 - Asociación Paleontológica Argentina | Ameghiniana
The Del Salto Formation is a predominantly epiclastic sequence, with minor tuffaceous intercalations. Six members are distinguished by their textural and compositional characteristics. Seven different horizons with marine faunas have been found, only one of them being previously known. A geological sketch map comprising the neighbourhoods of the fossiliferous outcrops is also given. Besides, additional plant remains are recorded from the Del Raton Formation, confirming its correlation with the Maliman ...
Tópico(s): Geological and Tectonic Studies in Latin America
2013 - Asociación Paleontológica Argentina | Ameghiniana
The carboniferous cnidaria Cladochonus harringtoni nov. sp. is described and figured. The new species comes from Barreal and belongs to the Leoipustula Zone, Hoyada Verde Forrnation. Its relationships with C. tenuicollis M'Coy, C. crassus (M'Coy ) and C. amosi Sabattini y Noirat are discussed.
Tópico(s): Marine Sponges and Natural Products
2013 - Asociación Paleontológica Argentina | Ameghiniana
Laura P. Perucca, Nicolás Vargas,
ResumenLa provincia de San Juan, en el centro-oeste de Argentina, posee numerosas evidencias de fallas con actividad tectónica cuaternaria.Las discontinuidades estructurales a lo largo de Cordillera Frontal, Precordillera y Sierras Pampeanas, determinan las diferentes características superficiales de las deformaciones cuaternarias, que a la vez producen distintos escenarios paleosísmicos.La mayor parte de estas deformaciones y estructuras sismogénicas, actualmente conocidas en el territorio argentino, ...
Tópico(s): Archaeological and Geological Studies
2014 - Sociedad Geológica Mexicana | Boletín de la Sociedad Geológica Mexicana
Eduardo A. Sanabria, Lorena B. Quiroga, Juan Carlos Acosta,
SUMMARY The presence of Rana catesbeiana (BullFrog ) (Anura:Ranidae), introduced in precordilleran environments of the Department Calingasta, San Juan, Argentina, is confirmed. Possible due to the introduction of this exotic anuran are discussed.
Tópico(s): Bat Biology and Ecology Studies
2005 - | Multequina
Mercedes B. Prámparo, Oscar Hugo Papú, Juan Pablo Milana,
The systematic results obtained from the palynological study of the basal member of Pachaco Formation, Paleogene, Precordillera Central, San Juan Province, is presented in this contribution. The samples were taken from four levels of two outcropping sections of this formation (the northem and the southem one). Twenty five species of spores and pollen grains belonging to the following genera: Todisporites, Divisisporites, Po/ypodiidites, Ephedripites, Podocarpidites, Dacrydiumites, Protodiploxypinus, ...
Tópico(s): Chemical and Environmental Engineering Research
1996 - Asociación Paleontológica Argentina | Ameghiniana
Luís A. Spalletti, Eduardo M. Morel, Analía E. Artabe, Daniel G. Ganuza, Josefina Bodnar,
Se efectua el analisis sedimentologico de la Formacion Carrizal (Triasico) del Depocentro de Marayes – El Carrizal, ubicado en el sector oriental de la provincia de San Juan. Sobre la base de muy contrastantes caracteristicas faciales y arquitecturales, la Formacion Carrizal es dividida en dos miembros: Arroyo Seco y Rickard. El Miembro Arroyo Seco se caracteriza por el predominio de conglomerados, a los que se asocian areniscas, areniscas conglomeradicas y escasas intercalaciones peliticas. Estos ...
Tópico(s): Geology and Paleoclimatology Research
2011 - | Latin American journal of sedimentology and basin analysis
Eduardo G. Ottone, Carlos L. Azcuy,
Se describe sistematicamente un lote de miosporas correspondientes al primer hallazgo de palinomorfos en la Formacion Guandacol. Las mismas provienen de la quebrada La Delfina y constituyen una asociacion rica en granos de polen monosacados pero pobre en esporas. La microflora se interpreta tentativamente como relacionada con un ambiente lacustre en condiciones templado frias. Sobre la base de datos palinologicos y estratigraficos se considera su antiguedad Carbonifero tardio bajo.
Tópico(s): Plant Diversity and Evolution
1989 - Asociación Paleontológica Argentina | Ameghiniana
Luís A. Buatois, M. Gabriela Mángano,
Resumen. El icnofosil Orchesteropus atavus Frenguelli se conoce solamente del Carbonifero de Argentina. Fue descripto originalmente en la localidad de Huerta de Huachi, cerca de Jachal, provincia de San Juan y hasta el presente no se contaba con informacion detallada acerca de la icnofauna y facies sedimentarias asociadas. Orchesteropus atavus se presenta en pelitas con laminacion paralela acumuladas por decantacion, pero intercaladas con turbiditas diluidas. Orchesteropus atavus esta asociado a ...
Tópico(s): Ichthyology and Marine Biology
2003 - Asociación Paleontológica Argentina | Ameghiniana
Valeria S. Pérez Loinaze, Carlos O. Limarino, Silvia N. Césari,
At the outcrops of the Tupe Formation in the La Herradura Creek, San Juan Province, two transgressive events are recorded, which range from few meters to tens of meters in thickness. These strata correspond to the stratotype of the faunal Tivertonia jachalensis-Streptorhynchus inaequiornatus Biozone. An evaluation of the timing of the two marine transgressions is made on the basis of palynological assemblages and available radiometric ages. A short-lived transgression is recorded in the latest Bashkirian- ...
Tópico(s): Paleontology and Stratigraphy of Fossils
2014 - National Geology and Mining Service | Andean geology
Víctor Hugo Contreras, Rodrigo L. Tomassini, Miguel A. Pérez, Cristian Oliva,
ARGENTINA).BIOCHRONOSTRATIGRAPHICAL AND PALAEOBIOGEOGRAPHICAL IMPLICATIONS.Isolated osteoderms of the dorsal carapace of the dasypodid Macrochorobates scalabrinii (Moreno & Mercerat) are described.The remains come from the upper deposits of the Las Flores Formation (Upper Miocene), outcropping at the Iglesia Valley (Iglesia Department, San Juan Province, Argentina).The detailed study of these osteoderms, including the description of some features not mentioned before, provides novel information about ...
Tópico(s): Amphibian and Reptile Biology
2013 - | Revista Brasileira de Paleontologia
The Carboniferous and Permian Castropoda from the Hoyada Verde Formation (Levipustula Zone) and Esquina Gris Formation (Cancrinella Zone) are reviewed. Four species, one of them new (Peruvispira reedi) are described and the age and stratigraphic value of the different species are discussed. Special attention is given to relationships and affinities of these gastropoda to those of similar age frorn different localities, of San Juan Province, the Tepuel Group of Chubut Province and other continents.
Tópico(s): Geological and Geophysical Studies Worldwide
1980 - Asociación Paleontológica Argentina | Ameghiniana
Cristina Gómez, Fernanda Cravero, Liliana Luna, Mirta Garrido,
Na Província de San Juan, noroeste da Argentina, ocorre um depósito de bentonitabranca formado a partir de rochas vulcânicas do Neogeno (Formação Las Trancas). Estas ...
Tópico(s): Geochemistry and Geologic Mapping
2009 - | Pesquisas em Geociências
Eber A. Cristofolini, Matías G. Barzola, Juan E. Otamendi, Alina M. Tibaldi, Augusto Morosini, Paula Armas, Giuliano Camilletti,
El presente trabajo expone una síntesis de la geología que comprende al complejo cristalino que constituye la Sierra de La Aguada, provincia de San Luis, Argentina, desde un enfoque basado en las relaciones de campo, los rasgos petrológico-estructurales y las características geoquímicas. Dicha serranía expone un basamento dominado por rocas plutónicas intermedias-máficas de afinidad calcoalcalina y granitoides félsicos peraluminosos, en conjunto intruidas en metamorfitas de bajo a medio grado metamórfico ...
Tópico(s): Geological and Tectonic Studies in Latin America
2017 - Spanish National Research Council | Estudios Geológicos
Elías Ramón de la Sota, María Luján Luna, Gabriela E. Giudice, Juan Pablo Ramos Giacosa,
Tópico(s): Plant Diversity and Evolution
2009 - Sociedad Argentina de Botánica | Boletín de la Sociedad Argentina de Botánica
Alción de las Pléyades Alonso Frank, Ernesto Kuchen, Yésica Alamino Naranjo, Bruno Damián Arballo,
Population growth without awareness of energy consumption produces irreversible effects on the environment. Power generation from non-renewable sources is responsible for negative environmental impacts due to the emission of greenhouse gases (GHGs). The concentration of carbon dioxide (CO2) in the atmosphere is a GHG indicator. The CO2 molecule has the ability to store longwave radiation (heat) and avoid the natural heat balance between the Earth and outer space. The aim of this paper is to find a ...
Tópico(s): Vehicle emissions and performance
2016 - University of the Bío-Bío | Revista Hábitat Sustentable
Este artículo no cuenta con un resumen.
Tópico(s): Amphibian and Reptile Biology
1996 - | Nuestras Aves
Ferrán Colombo Piñol, G. Anselmi, Pere Busquets, Raúl Cardó, Daniel Ragona, Emilio Ramos,
The structural character of the Andean Precordillera represents a high-level of fold and thrust belt formed during the alpine orogeny. The studied area is characterised by a set of eastwards imbricated overthrusts and folded rocks which are in movement, as evidenced by a number of earthquakes in recent times. The main rivers flow approximately perpendicular to the main structural lines and show severa/ terrace levels with different morphologies. The generation ot the terraces has often been attributed ...
Tópico(s): Geological and Tectonic Studies in Latin America
1996 - | Geogaceta
Cecilia Verena Perez Winter, Agustín G. Martinelli,
... a "invisibilidade" dos afrodescendentes nesse País. Assim mesmo, Juan Pi, fotógrafo da cidade de San Rafael, província de Mendoza (Argentina), registrou com a sua câmera vários eventos importantes ... trabalho é mostrar a existência de afrodescendentes na Argentina através da Coleção Fotográfica de Juan Pi (pai e filho), que se encontra armazenada no Museo de História Natural de San Rafael (província de Mendoza), em um momento em que se ...
Tópico(s): Youth Culture and Social Dynamics
2012 - UNIVERSIDADE FEDERAL DE UBERLÂNDIA | Caminhos de Geografia
Son numerosas las necesidades que el hombre tiene, de alimentos, abrigo, etc., y con especial importancia de salud. Ésta es definida por la Organización Mundial de la Salud en el año 1989 como el estado de completo bienestar físico, psíquico y social y no la mera ausencia de enfermedad. Bajo esta definición de salud son varias las ciencias del hombre que se interesan por este tema, entre ellas la Geografía. Esto lleva a plantear el tema de la salud desde una visión más amplia, vinculada al entorno ...
Tópico(s): Aging, Health, and Disability
2006 - UNIVERSIDADE FEDERAL DE UBERLÂNDIA | Hygeia - Revista Brasileira de Geografia Médica e da Saúde
Eduardo A. Sanabria, Carlos Degiovanini, Ezequiel Salomon, Exequiel González,
Se reporta la ampliacion de distribucion para Chacophrys pierottii en la provincia de San Juan, Republica Argentina.
Tópico(s): Plant and soil sciences
2012 - Asociación Herpetológica Argentina | Cuadernos de herpetología/Cuadernos de herpetología