Timing of the magmatism of the paleo-Pacific border of Gondwana: U-Pb geochronology of Late Paleozoic to Early Mesozoic igneous rocks of the north Chilean Andes between 20° and 31°S [PDF]
, 2014 Indexación: Web of Science; ScieloABSTRACT. U-Pb zircon geochronological data provide record of about 130 Ma of igneous activity in the Andes of northern Chile, which extended episodically from the latest Early Carboniferous to Early Jurassic (328-194 Ma)
Maksaev, Víctor +2 more
core +1 more source
Geologia USP Série CientíficaOs 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
M. .. S. C. Chaves +3 more
semanticscholar +1 more source
Combined U-Pb and Lu-Hf isotope analyses by laser ablation MC-ICP-MS: methodology and applications
Anais da Academia Brasileira de Ciências, 2010 The Lutetium-Hafnium isotopic system represents one of the most innovative and powerful tools for geochronology and isotopic studies. Combined U-Pb and Lu-Hf in situ analyses on zircon by LA-MC-ICP-MS permit to characterize isotopically the host magma ...
Massimo Matteini +3 more
doaj +1 more source
Variability over time in the sources of South Portuguese Zone turbidites: evidence of denudation of different crustal blocks during the assembly of Pangea [PDF]
, 2013 This study combines geochemical and geochronological data in order to decipher the provenance of Carboniferous turbidites from the South Portuguese Zone (SW Iberia).
Albardeiro, Luis +8 more
core +1 more source
Anais da Academia Brasileira de Ciências, 2009 Age determinations using the 235U and 238U radioactive decay series to the daughter isotopes 207Pb and 206Pb, respectively, using the mineral zircon (ZrSiO4), are widely used to decipher geological processes.
Bernhard Bühn +3 more
doaj +1 more source
El volcanismo jurásico superior de la Formación Río Damas-Tordillo (33°-35,5°S): antecedentes su sobre petrogénesis, cronología, proveniencia e implicancias tectónicas [PDF]
, 2014 Los depósitos continentales y volcánicos de la Formación Rio Damas-Tordillo, Jurásico Superior, representan un período restringido de sedimentación continental dentro del registro mayormente marino de la Cuenca Neuquina.
Calderón, Sergio +7 more
core +2 more sources
Tectonic overview of the West Gondwana margin [PDF]
, 2008 The oceanic southern margin of Gondwana, from southern South America through South Africa, West Antarctica, New Zealand (in its pre break-up position), and Victoria Land to Eastern Australia is one of the longest and longest-lived active continental ...
Pankhurst, Robert J., Vaughan, Alan P.M.
core +1 more source
Petrología metamórfica y geocronología de la unidad culminante del complejo de Órdenes en la región de Carballo (Galicia, NW del Macizo Ibérico) [PDF]
, 2000 En esta Tesis Doctoral se presenta el resultado de un estudio integrado de petrología metamórfica y geocronología(método U-Pb) realizado en el sector occidental de la unidad culminante del Complejo de Ordenes.
Abati Gómez, Jacobo
core +1 more source
Did Patagonia collide with Gondwana in the Late Paleozoic? Some insights from a multidisciplinary study of magmatic units of the North Patagonian Massif [PDF]
, 2010 The origin of Patagonia and its relations with the South American crustal blocks to the north have been a matter of debate for decades. We report results from a multidisciplinary study centered on Paleozoic granitoids exposed in the northeastern corner ...
Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina) +8 more
core +2 more sources
Boletín Geológico, 2019 Con el objetivo de ampliar el conjunto de materiales de referencia del Laboratorio de Geocronología del Servicio Geológico Colombiano (LG-SGC) se colectaron circones provenientes de la sienita nefelínica de San José del Guaviare, localidad del Jordán ...
Jimmy Alejandro Muñoz Rocha +7 more
doaj +1 more source