En este trabajo se analiza la expresión estratigráfica y significado geológico de la superficie que separa a las formaciones Vinchina (Mioceno) y Toro Negro (Mioceno Tardío-Plioceno), las que afloran conformando la Sierra de Los Colorados (oeste de la ...
Carlos O. Limarino +2 more
doaj +2 more sources
Biostratigraphic significance of the latest Cambrian-earliest Ordovician agnostoid trilobites from Northwestern Argentina [PDF]
The biostratigraphic significance of the latest Cambrian-earliest Ordovician trilobite agnostoids from northwestern Argentina is summarized. A characterization of the faunas recognized below and above the Cambrian-Ordovician boundary is presented on the ...
Tortello, M. F.
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Contexto: La cuenca alta del río Chaschuil se encuentra en las provincias geomorfológicas de codillera Frontal y sistema de Famatina, se extiende desde el límite superior de la cuenca, a los 26° 45' 6,35" de latitud S y 68° 2'22 15" de longitud O, hasta ...
Serra Malvina +2 more
doaj +1 more source
Biogenic and physical sedimentary structures in latest Cambrian-earliest Ordovician mudrock facies (Famatina Range, Northwestern Argentina) [PDF]
Lamination is a common feature in shales and other mud-dominated rocks. When combined with other geological evidence, the diverse lamination types can provide important information about sedimentary processes and depositional environments.
Esteban, S.B.
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An Early Ordovician (Floian) Conodont Fauna from the Eastern Cordillera of Peru (Central Andean Basin) [PDF]
Late Floian conodonts are recorded from a thin limestone lens intercalated in the lower part of the San José Formation at the Carcel Puncco section (Inambari River), Eastern Cordillera of Peru.
Albanesi, G. L., +4 more
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Internal framework and geochemistry of the Carboniferous Huaco granite pluton, Sierra de Velasco, NW Argentina [PDF]
The A-type Huaco granite pluton of the Velasco range (Sierras Pampeanas of northwest Argentina) is formed by three coeval granitic facies and contains subordinate coeval-to-late facies, as well as enclaves, dikes and stocks that show different temporal ...
Grosse, Pablo +3 more
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Fil: Tibaldi, Alina María. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba.
Cristofolini, Eber Ariel +8 more
openaire +2 more sources
La Horqueta Shear Zone, Sierra de Velasco, NW Argentina: petrography, geochemistry, structures and tectonic significance [PDF]
La Faja de Deformación La Horqueta (FDLH) es la sexta faja de cizalla reconocida en la sierra de Velasco, Sierras Pampeanas, NO de Argentina. Esta faja separa dos tipos de metagranitoides de características petrográficas y geoquímicas contrastadas ...
Grosse, Pablo +2 more
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Tremadocian Graptolite-Conodont Biostratigraphy of the South American Gondwana margin (Eastern Cordillera, NW Argentina) [PDF]
The Tremadocian graptolite and conodont faunas of the Gondwana Margin recorded at the Eastern Cordillera (EC) of Salta and Jujuy provinces (northwestern Argentina) are studied.
Albanesi, G. L., +3 more
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Internal anatomy of an erg sequence from the aeolian-fluvial system of the De La Cuesta Formation (Paganzo Basin, northwestern Argentina) [PDF]
Permian red beds of the De La Cuesta Formation in the Sierra de Narváez (Paganzo Basin, northwestern Argentina) are essentially composed of sandstones associated with mudstones and subordinate conglomerates.
Colombo Piñol, Ferran +2 more
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