Results 51 to 60 of about 106 (96)

Stratigraphy, tectonics and detrital zircon U-Pb (LA-ICP-MS) geochronology of the Rio Preto Belt and northern Paramirim corridor, NE, Brazil

Brazilian Journal of Geology
: Two important Proterozoic metasedimentary sequences, the Rio Preto and Santo Onofre Groups, crop out along the northwestern margin of the São Francisco craton and in northern Paramirim corridor, respectively.
Davi da Costa Bezerra Gobira de Alcântara, Alexandre Uhlein, Fabrício de Andrade Caxito, Ivo Dussin, Antônio Carlos Pedrosa-Soares   +4 more
doaj   +1 more source

Geological and isotopic characteristics of granites from the Western Pernambuco-Alagoas Domain: implications for the crustal evolution of the Neoproterozoic Borborema Province

Brazilian Journal of Geology
The Western Pernambuco-Alagoas Domain is a complex tectonic domain of the Southern part of the Neoproterozoic Borborema Province. It borders the Northern margin of São Francisco Craton. U-Pb and Sm-Nd data discussed in this work show that, in the Western
Rodrigo Fabiano da Cruz, Márcio Martins Pimentel, Ana Cláudia de Aguiar Accioly, Joseneusa Brilhante Rodrigues   +3 more
doaj   +1 more source

Geochronological and geochemical data from fracture-filling calcites from the Lower Pedraforca thrust sheet (SE Pyrenees). [PDF]

Data Brief, 2020
Cruset D, Cantarero I, Benedicto A, John CM, Vergés J, Albert R, Gerdes A, Travé A.   +7 more
europepmc   +1 more source

Revision of Two Spinicaudatan Species from the Cañadón Asfalto Formation (Jurassic), Patagonia Argentina. [PDF]

Zool Stud, 2020
Monferran MD, Gallego OF, Cabaleri NG.
europepmc   +1 more source

Tectonic evolution of the Dom Feliciano Belt in Southern Brazil: Geological relationships and U-Pb geochronology

Brazilian Journal of Geology
: The Dom Feliciano Belt is an important Neoproterozoic to Cambrian orogenic complex, extending from eastern Uruguay to southern Brazil. It comprises a collage of oceanic domains and continental fragments developed between 900 and 540 Ma between the Rio ...
Ruy Paulo Philipp, Marcio Martins Pimentel, Farid Chemale Jr   +2 more
doaj   +1 more source

Preparação de amostras para geocronologia U-Pb em zircões do Granito Traga, Uauá-BA

Anais do Congresso de Iniciação Científica da Unicamp, 2016
Esdras Filipe De Oliveira Luiz, Elson Paiva De Oliveira   +1 more
openaire   +2 more sources

Geocronologia U-Pb (LA-ICPMS) de zircões dos distritos pegmatíticos de Santa Maria de Itabira e São José da Safira (Minas Gerais): populações contrastantes na região da Província Pegmatítica Oriental do Brasil?

Geologia USP. Série Científica
Os distritos pegmatíticos de Santa Maria de Itabira (DPSM) e de São José da Safira (DPSJ) são classicamente integrantes da Província Pegmatítica Oriental do Brasil (PPOB), embora até então com carência de dados geocronológicos em termos regionais. Neste  estudo apresentam-se novas datações U-Pb (LA-ICPMS) de zircões extraídos de três pegmatitos desses ...
Mario Luiz de Sá Carneiro Chaves, Antônio Carlos Pedrosa-Soares, Ivo Antônio Dussin, Luiz Alberto Dias Menezes Filho   +3 more
openaire   +1 more source

LA-ICP-MS zircon U-Pb geochronology to constrain the age of post-Neocomian continental deposits of the Cerrillos Formation, Atacama Region , northern Chile: tectonic and metallogenic implications Geocronología U-Pb en circón por LA-ICP-MS para circunscribir la edad de depósitos continentales post-neocomianos de la Formacion Cerrillos, Región de Atacama, norte de Chile: implicancias tectónicas y metalogénicas

Andean Geology, 2009
New U-Pb zircon dating of volcamc intercalations in the lower conglomeratic part of the Cerrillos Formation shows that its deposition extended in time at least from 110.7±1.7 to 99.7±1.6 Ma.
Víctor Maksaev, Francisco Munizaga, Víctor Valencia, Fernando Barra   +3 more
doaj  

Petrologia e geocronologia (U/Pb-Sm/Nd) do Granito Passagem, Complexo Granitóide Pensamiento, SW do Cráton Amazônico (MT)

Revista Brasileira de Geociências, 2010
Gisely Carmo de Jesus, Maria Zélia Aguiar de Sousa, Amarildo Salina Ruiz, João Batista de Matos   +3 more
openaire   +2 more sources

Caldera formation and progressive batholith construction: Geochronological, petrographic and stratigraphic constraints from the Coxcatlán-Tilzapotla area, Sierra Madre del Sur, Mexico

Revista Mexicana de Ciencias Geológicas, 2014
Un rasgo de mucho interés en la provincia volcánica del Eoceno tardío-Oligoceno temprano de la Sierra Madre del Sur es la estructura dómica de forma elíptica, orientada al NW-SE (52 × 30 km) y ubicada en el área de Coxcatlán-Tilzapotla.
Barbara M. Martiny, Dante J. Morán-Zenteno, Luigi Solari, Margarita López-Martínez, Shanaka L. de Silva, Diana Flores-Huerta, Lilibeth Zúñiga-Lagunes, Laura Luna-González   +7 more
doaj