Results 1 to 10 of about 5,258 (184)
U–Pb SHRIMP zircon dating of Grenvillian metamorphism in Western Sierras Pampeanas (Argentina): Correlation with the Arequipa-Antofalla craton and constraints on the extent of the Precordillera Terrane [PDF]
Gondwana Research, 2006 The Sierras Pampeanas of Argentina, the largest outcrop of pre-Andean crystalline basement in southern South America, resulted from plate interactions along the proto-Andean margin of Gondwana, from as early as Mesoproterozoic to Late Paleozoic times (e ...
Christopher Mark Fanning +2 more
exaly +8 more sources
Grenvillian massif-type anorthosites in the Sierras Pampeanas [PDF]
Journal of the Geological Society, 2004 We report the discovery of massif-type anorthosites in the Andean basement of the Western Sierras Pampeanas of Argentina. U–Pb zircon dating (by sensitive high-resolution ion microprobe) of a cogenetic gabbronorite dyke yields ages of 1070 ± 41 Ma ...
Baldo, Edgardo G. +8 more
core +7 more sources
Piedmont deposits as seismic energy dissipators, Sierras Pampeanas of Argentina [PDF]
SN Applied Sciences, 2021 This study shows the neotectonic deformation occurred in the southern piedmont of the Cumbres Calchaquíes, in the Amaicha and Tafí valleys. Neotectonic deformation manifests itself through faults, folds and diversions of drainage channels.
Adolfo Antonio Gutiérrez +3 more
doaj +3 more sources
Refined exhumation history of the northern Sierras Pampeanas, Argentina [PDF]
Tectonics, 2013 AbstractThe Sierra de Aconquija and Cumbres Calchaquíes in the thick‐skinned northern Sierras Pampeanas, NW Argentina present an ideal setting to investigate the tectonically and erosionally controlled exhumation and uplift history of mountain ranges using thermochronological methods. Although these ranges are located along strike of one another, their
Stefan Löbens +2 more
exaly +3 more sources
Estudios Geologicos, 2007 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 ...
J. P. López, P. Grosse, A. J. Toselli
doaj +4 more sources
Composición química de granitos batolíticos de las sierras pampeanas
Revista del Museo de La PlataSe describe en esta contribución la metodología químico-analítica y los resultados obtenidos mediante la misma a los efectos de la determinación de elementos mayoritarios y trazas en cuerpos graníticos mayores de las Sierras Pampeanas.
Carlos W. Rapela, Larry Heaman
doaj +1 more source
Estudios Geologicos, 1992 A grandes rasgos, los plutones estudiados tienen semejanzas con otros del entorno regional, tal como los de la Sierra de Mazán, pero con peculiaridades mineralógicas.
G. A. Toselli +3 more
doaj +5 more sources
Active deformation in the northern Sierra de Valle Fértil, Sierras Pampeanas, Argentina [PDF]
Journal of South American Earth Sciences, 2015 Fil: Ortiz, Gustavo Federico. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico San Juan.
Ortiz, Gustavo Federico +5 more
openaire +2 more sources
Aportes metodológicos para el estudio de la tecnología lítica tallada en cuarzo (Argentina)
Arqueologia, 2022 El cuarzo fue una de las materias primas más utilizada para la manufactura de instrumentos líticos a través del tiempo y del espacio. Sin embargo, su gran dureza, la presencia de planos de fractura y otras imperfecciones causaron que no haya sido ...
Enrique Alejandro Moreno +6 more
doaj +1 more source
Circular Natural Geoforms, Sierras Pampeanas, Argentina
Open Journal of Geology, 2017 We describe two circular morphological features representing depressed areas. This preliminary work is based on visual interpretations from Landsat ETM satellite images and SRTM Radar scans. The two geoforms are located at the north of the Sierras Pampeanas in Argentina. The La Cienaga circular indentation is 15 km in diameter and Las Cejas is 34 km in
Gutierrez, Adolfo Antonio +2 more
openaire +3 more sources