Pedro Raúl Gutiérrez, Silvia N. Césari,
New palynological samples from the Lagares Formation at the localities of Mine La Margarita and Los Mogotes Colorados, show interesting associations which are described. Two new species are established: Lophotriletes discordis and Portalites baculus. The following species are recorded for the first time in this lithostratigraphical the unit: Horriditrlletes uruguaiensis (Marques Toigo) Archangelsky & Gamerro, Punctatisporlies lucidulus Playford & Helby, Raistrickia radiosa Playford & Helby, Foveosporites ...
Tópico(s): Botanical Research and Applications
1988 - Asociación Paleontológica Argentina | Ameghiniana
Carlos A. Menéndez, Carlos L. Azcuy,
In this third part, the palynological study of the sediments from the lower member of the Lagares Formation is completed with the description of spores of the infraturma Apiculati, Murornati, Monopseudosacciti, Laevigatomonoleti and pollen of the subturma Monosaccites and Disaccites. Sixteen species of spores and pollen grains, five of which are new (Apiculiretusispora coalescens, Microreticulatisporites inaequalis, Endosporites rhytidosaccus, Florinites flaccidus and Perisaccus angustus), have been ...
Tópico(s): Diatoms and Algae Research
2013 - Asociación Paleontológica Argentina | Ameghiniana
Carlos O. Limarino, Patricia L. Ciccioli, Sergio A. Marenssi,
EXTENDED ABSTRACT The stratigraphic expression and geological significance of the contact between the Vinchina (Late Miocene) and Toro Negro (Late Miocene-Pliocene) formations (Turner, 1964; Ciccioli et al. , 2010) is analyzed in this paper. These units with more than 8,000 m of sediments (Ramos, 1970; Tripaldi et al. , 2001; Ciccioli, 2008) represent the main units of the infill of the Vinchina Basin (Ciccioli et al. , 2010) (Figs. 1-3) during the transition from a simple foreland basin stage to a broken foreland ...
Tópico(s): Geological and Geophysical Studies Worldwide
2010 - | Latin American journal of sedimentology and basin analysis
Nicolás Frutos, Luciana Cecilia Belver,
Tópico(s): Species Distribution and Climate Change
2007 - Asociación Herpetológica Argentina | Cuadernos de herpetología/Cuadernos de herpetología
Luis Enrique Fauqué, Carlos O. Limarino, Silvia N. Césari, Nora Sabattini,
En este trabajo se da a conocer la existencia de Carbonifero inferior fosilifero, en el area del Rio La Troya (Precordillera de La Rioja). De acuerdo a su composicion litologica la secuencia ha sido dividida en cuatro secciones (A, B, C y D). La seccion A (de unos 375 m de espesor aproximado) esta principalmente compuesta por areniscas y pelitas y contiene a los niveles fosiliferos considerados en este trabajo. La seccion B (500 m) esta formada por pelitas laminadas y algunos niveles de diamictitas ...
Tópico(s): Evolution and Paleontology Studies
1989 - Asociación Paleontológica Argentina | Ameghiniana
Carlos A Azcuy, Pedro A. González Gutiérrez, Viviana D. Barreda,
SOME CARBONIFEROUS MIOSPORES FROM AGUA COLORADA FORMATION,LA RIOJA PROVINCE.- A palynologic study of several samples collected. at a locality situated OD the eastern flank of the Sierra de Famatina is made. The miospores are found in carbonaceous claystones that belong to the, Agua Colorada Formation. Ten species are described, corresponding to the genera Punctatisporites, Anapiculatisporites, Apiculiretusispora , Raistrickia , Dictyotriletes, Ahrensisporites y Tetraporina . Also, some monosaccate pollen ...
Tópico(s): Geological and Tectonic Studies in Latin America
2013 - Asociación Paleontológica Argentina | Ameghiniana
Juan Carlos Amaya, Nancy Moreno, Nancy Salmaso, Eduardo Bazan, Gerardo Ricoy, Patricia Córdoba, Graciela Santillán,
Este trabajo fue realizado en la provincia de La Rioja, ubicada en el noroeste argentino. El objetivo fue estimar el porcentaje de heces de caninos con presencia de antígenos de Echinococcus sp. en las distintas regiones de la provincia. Se tomaron un total de 269 muestras de materia fecal seca de caninos, que fueron analizadas por la técnica de copro-ELISA. La zona más afectada fue la zona IV, que contó con un 30,5 % de muestras positivas. La zona I, que corresponde al Departamento Capital, tuvo ...
Tópico(s): Parasitic Infections and Diagnostics
2016 - Elsevier BV | Revista Argentina de Microbiología
This first part deals with an integrated stratigraphic profile of the Malanzan-Loma Larga zone, and a geological map is included for geographical and stratigraphic reference of the palynological samples studied. The sporomorphs described correspond to the following members of the Malanzan Formation: Divisoria, Estratos Carbonosos and Conglomerado Amarillo Verdoso a Violado, aged between the Namurian and the Westphalian. The three assemblages studied include a total of seventy-six species. This paper ...
Tópico(s): Chemical and Environmental Engineering Research
2013 - Asociación Paleontológica Argentina | Ameghiniana
Alejandro Rogelio Carrizo, Elsa Daniela De la Vega, María de Fátima Guimarães,
... Vale Antinaco – Los Colorados, localizado no centro-oeste da província de La Rioja (Argentina), apresenta-se como uma região de grande importância ...
Tópico(s): Water Resource Management and Quality
2023 - UNIVERSIDADE FEDERAL DO PARANÁ | Desenvolvimento e Meio Ambiente
Pedro Raúl Gutiérrez, Javier Muzón, Carlos O. Limarino,
En esta nota se da a conocer la ubicacion geografica y estratigrafica del insecto alado fosil mas antiguo de la Argentina. El mismo proviene de sedimentitas de origen lacustre de la parte baja de la Formacion Guandacol, que aflora en el cerro Guandacol al sudoeste de la provincia de La Rioja, y corresponde a uno de los ejemplares de Protodonata mas completos hallados hasta el momento en America del Sur, donde ...
Tópico(s): Plant Diversity and Evolution
2014 - Asociación Paleontológica Argentina | Ameghiniana
Felipe R. Durand, Alejandro J. Toselli, Florencio Gilberto Aceñolaza,
Resumen. En este trabajo se realiza un analisis de las estructuras presentes en el basamento granitico, que aflora en la quebrada de Miranda, Sistema de Famatina, Provincia de La Rioja. Este analisis involucra a las franjas miloniticas, las diaclasas y la relacion de las mismas con las fallas mas importantes que se observan en la zona. Se destaca, tambien, la presencia de una megafalla regional y su importancia en la evolucion geotectonica de esta parte del Sistema de Famatina. Se efectua, ademas, ...
Tópico(s): Environmental and Ecological Studies
1987 - National Geology and Mining Service | Andean geology
Renato R. Andreis, Oscar G. Arrondo,
Restricted to the northern slope of cerro Punta Colorada, a local episode of deformation of Guandacol Formation strata is here described. On the basis of stratigraphical considerations and the nature of the paleofloristic associations found in both unities, it is shown that the folding age may be placed between Visean and Westaphalian times and might correspond to an orogenic phase of Variscic Movements.
Tópico(s): Archaeological and Historical Studies
2013 - Asociación Paleontológica Argentina | Ameghiniana
Tópico(s): Geological and Geophysical Studies Worldwide
1977 - National University of Tucumán | Acta Geológica Lilloana
osandoval osandoval, Manuel Mamani,
The population of Santa Rita de Catuna city is of 1695 inhabitants; possibilities for developing in any aspect from the economic to the social, including the demograhic, is limited by the availability of potable water. Under this scenario, it is imperative to know if there are possibilities to achieve water resources to a greater extent than currently exists. For its accomplishment, 30 exploratory geophysical polls (SEV) with Abem AC Terrameter equipment were carried out, one electrical tomography ...
Tópico(s): Environmental and Ecological Studies
2016 - Pan American Institute of Geography and History | Revista Geofísica
Alfonsina Tripaldi, Carlos O. Limarino,
Eolian climbing dunes found in the sierra de Los Tarjados (south of the La Rioja province> Argentina) are described in this paper. According to their morphology two mayor types of dunes have been recognized: 1) climbing dunes associated to ramp deposits, which can ascent the mountain front; and 2) climbing dunes do not related to ramps and where deflationary channel developed between the dune front and the cliff. Climbing dunes sands show finer mean grain-size, better sorting and lower skewness than ...
Tópico(s): Soil erosion and sediment transport
1999 - | Geogaceta
X-rays, chemichal and genetical characters of a chloritized montmorillonite, found in the Rio Chiflon Formation (La Torre, La Rioja,, Argentina) are described. The mineral is associated with minor amounts os illite, montmorillonite and chlorite. The principal non-clay associates are analcite and hematite. This chloritized montmorillonite occurs in red siltstones and sandstones of Triassic age. The sandstones and siltstones are organized in poorly developed fluviatil cyclothems. The Li* and K* varieties ...
Tópico(s): Geological and Geophysical Studies Worldwide
1969 - National University of Tucumán | Acta Geológica Lilloana
Rubén Ignacio-Fernández, Guillermo Amílcar-Vergara,
Las manifestaciones auriferas que se estudian en este trabajo se localizan en el sector central de la sierra de Mazan, aproximadamente a unos 80 km al norte de la ciudad de La Rioja. Se analiza su origen hidrotermal vinculado a fracturas de direccion submeridional geotermalmente activas (falla de Santa Teresita) formadas en epocas pos-andicas (Pleistoceno-Holoceno). La mineralizacion estudiada se localiza en la denominada Fm. Santa Teresita (nov. Nom.) consistente en una alongada faja submerindional ...
Tópico(s): Geological and Geophysical Studies Worldwide
1998 - High Institute of Mining and Metallurgy (ISMM) | Minería y geología
Gerardo Oscar Fanton, Patricia Martínez, Mario Giménez,
Fil: Gimenez, Mario Ernesto. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina
Tópico(s): Geophysical and Geoelectrical Methods
2014 - | GeoActa
El estudio del biodeterioro del patrimonio cultural es una línea de trabajo que poco ha sido abordada desdeuna perspectiva arqueológica. Sin embargo, investigaciones arqueométricas recientes en materiales cerámicos apuntan a diversidad de agentes biológicos involucrados en un complejo proceso de deterioro mecánico, químico y estético en las superficies externas, internas y al interior de la pasta, presentando una relación sinérgica con la meteorización, la erosión y los agentes postdepositacionales ...
Tópico(s): Archaeological and Historical Studies
2020 - Universidad Nacional de Rosario | Anuario de Arqueología
Débora M. Kligmann, María Pía Falchi,
En este trabajo se presenta una propuesta inicial de un proyecto geoarqueológico en curso, que busca comprender los diferentes pasos de la cadena operativa de producción de grabados rupestres y sus consecuencias en los procesos de formación a lo largo del tiempo, considerando particularmente los procesos de deterioro del arte. Para ello se plantea una cadena operativa basada en modelos previos, la cual incluye cinco etapas que se pueden combinar de diferentes maneras: 1) Selección del soporte y ...
Tópico(s): Geological and Geophysical Studies Worldwide
2021 - National University of La Plata | Revista del Museo de La Plata
Omar Fernando Castaño, Horacio Enrique Crespo,
Tópico(s): Water Resource Management and Quality
1981 - National University of Tucumán | Acta Geológica Lilloana
Marta Omil, Rafael R. Rey González,
espanolEn este trabajo se dan dos nuevas fechas radimetricas (metodo K-Ar) de Loma de Las Campanas (provincia de La Rioja). Se obtienen de gabros y los resultados muestran una actividad magmatica entre 310-312 millones de anos EnglishPotassium-Argon ages of gabbros from Loma de las Campanas, Dpto. Famatina, province of La Rioja (Argentina). Two new radimetric dates (K-Ar method) from Loma de Las Campanas (province of La Rioja) are given in this paper. Their are obtained of gabbros and the results show ...
Tópico(s): Geological and Geophysical Studies Worldwide
1989 - National University of Tucumán | Acta Geológica Lilloana
Luciano Javier Ávila, Martín Miguel Femenías, Cristian Hernán Fulvio Pérez, Mariana Morando,
Three Liolaemus species are cited as new from La Rioja province. Two were found in a poorlyexplored area in the top of an isolated mountain system in the middle of the Dry Chaco andother from the eastern edge of a salt-pan basin in the southwest limit of the Chaco biogeographicformation. We also present an updated checklist of La Rioja lizards.
Tópico(s): Plant and soil sciences
2021 - Asociación Herpetológica Argentina | Cuadernos de herpetología/Cuadernos de herpetología
A cuantitative analysis of 18 palynological samples from the Tupe Formation at the localities of mine La Victoria and mine La Negra is presented. Quantitative analysis of genera as well as groups of forms was carried out through the counting of 300 specimens per sample. Observed variations on the occurrence of the forms along the stratigraphic profile are discussed. The study of the pollen diagrams suggests the existence of a paleocomunity that evolved without great changes in its composition. The ...
Tópico(s): Geochemistry and Geologic Mapping
1986 - Asociación Paleontológica Argentina | Ameghiniana
... Xenarthra) from the Salicas Formation (late Miocene, Messinian), La Rioja Province, Argentina, Journal of South American Earth Sciences 105 (Jan ... Mehl Registro Faunístico y Paleoambientes del Cuaternario Tardío, Provincia de la Pampa, Argentina, Ameghiniana 50, no.66 (Dec 2013): 554–570. ...
Tópico(s): Bat Biology and Ecology Studies
1889 - University of Chicago Press | The American Naturalist
Adrián Mario Iñíguez Rodríguez,
... en el perfil del cerro Guandacol de la Provincia de La Rioja, se encuentran una serie de minerales de arcillas iuterestratiticadas, distrbuidas en la columna sedimentaria, con la presencia de la interestratificacion regular Clorita-Molltmorillonita, denominada comunmente Corrensita, restringida unicamente a la formacion Patquia (Permico). Tres tipos de minerales bien definidos, han sido encontrados: (14c-14m) Corrensita, (10-14m) Allevardita y (14c-14v) Clorita-Vermiculita, que no han sido citados en Argentina hasta la fecha. La natualreza de los minerales ...
Tópico(s): Geological and Tectonic Studies in Latin America
1968 - | Revista del Museo de La Plata
... 40 km al noroeste de Guandacol, en la provincia de La Rioja, Argentina. Una caracteristica notable de esta fauna en particular ...
Tópico(s): Geological and Tectonic Studies in Latin America
1992 - National University of Tucumán | Acta Geológica Lilloana
A. J. Losada-CalderÓN, Sandra L. McBride, Mark S. Bloom,
... del Nevados del Famatina está situado en la provincia de La Rioja, Argentina. Este distrito presenta una mineralización del tipo porfírica ( ...
Tópico(s): earthquake and tectonic studies
1994 - Elsevier BV | Journal of South American Earth Sciences
Alfonsina Tripaldi, Carlos O. Limarino,
... reservorios. El analisis del valle del rio Guandacol (provincia de La Rioja, Argentina) y de tramos especificos de la Formacion Vinchina ( ...
Tópico(s): Geological formations and processes
2008 - | Latin American journal of sedimentology and basin analysis
... the tropidurine iguanid lizard Liolaemus anomalus from "la provincia de La Rioja" in western Argentina.No further specimens have been referred to this ...
Tópico(s): Bat Biology and Ecology Studies
1979 - The Society for the Study of Amphibians and Reptiles | Journal of Herpetology