Buscar
Mostrando ítems 1-10 de 55
Protocols for in situ measurement of oxygen isotopes in goethite by ion microprobe
(Elsevier B.V., 2020-02-05)
We present protocols for high-spatial resolution measurement of oxygen isotope ratios of goethite (alpha-FeOOH) with the Sensitive High Mass Resolution Ion Microprobe - Stable Isotopes (SHRIMP-SI) and propose a natural ...
U-Pb SHRIMP dating of basement rocks of the Iriri-Xingu domain, Central Amazonian province, Amazonian craton, Brazil
(Sociedade Brasileira de Geologia, 2020)
Sensitive High Resolution Ion Microprobe (SHRIMP IIe/MC) of the Institute of Geosciences of the University of São Paulo, Brazil: analytical method and first resultsMicrossonda Iônica de Alta Resolução e de Alta Sensibilidade (SHRIMP IIe/MC) do Instituto de Geociências da Universidade de São Paulo, Brasil: método analítico e primeiros resultados
(Universidade de São Paulo, Instituto de Geociências, 2014)
Neoproterozoic backarc basin: Sensitive high-resolution ion microprobe U-Pb and Sm-Nd isotopic evidence from the Eastern Pampean Ranges, Argentina
(Geological Society of America, 2007-06)
The Eastern Pampean Ranges comprise high-grade supracrustal sequences with linear belts of mafic-ultramafic bodies representing ophiolite remnants. New U-Pb and Nd isotopic data suggest that the tectonic evolution of the ...
Comparative Lower-Middle Ordovician conodont oxygen isotope palaeothermometry of the Argentine Precordillera and Laurentian margins
(Elsevier Science, 2020-07)
Stratigraphic, palaeontologic, and palaeomagnetic data support a hypothesis that argues for the Argentine Precordillera rifting from the southwestern margin of Laurentia in low latitudes during the Cambrian, migrating ...
U-Pb zircon in situ dating with LA-MC-ICP-MS using a mixed detector configuration
(Academia Brasileira de Ciências, 2012)
The LA-MC-ICP-MS method applied to U-Pb in situ dating is still rapidly evolving due to improvements in both lasers and ICP-MS. To test the validity and reproducibility of the method, 5 different zircon samples, including ...
Zircon and Titanite U–Pb SHRIMP dating of unexposed basement units of the Buenos Aires region, southeastern Río de La Plata Craton, Argentina
(Taylor & Francis, 2015-12)
We present U–Pb Sensitive High Mass Resolution Ion MicroProbe (SHRIMP) data of unexposed igneous-metamorphic basement rocks from two areas of the southeastern Río de la Plata craton (RPC; Buenos Aires city) located within ...