Chemical classification of common volcanic rocks based on degree of silica saturation and CaO/K2O ratio

by SANTOS,JOÃO O.S., HARTMANN,LÉO A.
Published 2021

Zircon ages delimit the provenance of a sand extrudite from the Botucatu Formation in the Paraná volcanic province, Iraí, Brazil

by PINTO,VITER M., HARTMANN,LÉO A., SANTOS,JOÃO O.S., MCNAUGHTON,NEAL J.
Published 2015

Tectonic evolution of the southern margin of the Amazonian craton in the late Mesoproterozoic based on field relationships and zircon U-Pb geochronology

by RIZZOTTO,GILMAR J., HARTMANN,LÉO A., SANTOS,JOÃO O.S., MCNAUGHTON,NEAL J.
Published 2014

Protolith age of Santa Maria Chico granulites dated on zircons from an associated amphibolite-facies granodiorite in southernmost Brazil

by Hartmann,Léo A., Liu,Dunyi, Wang,Yenbin, Massonne,Hans-Joachim, Santos,João O.S.
Published 2008

Metamorphic evolution and U-Pb zircon SHRIMP geochronology of the Belizário ultramafic amphibolite, Encantadas Complex, southernmost Brazil

by Hartmann,Léo A., Santos,João O.S., Leite,Jayme A.D., Porcher,Carla C., Mcnaughton,Neal J.
Published 2003

Geochemistry, U-Pb SHRIMP zircon dating and Hf isotopes of the Gondwanan magmatism in NW Argentina: petrogenesis and geodynamic implications

by Poma,Stella, Zappettini,Eduardo O, Quenardelle,Sonia, Santos,João O, Koukharsky,Magdalena, Belousova,Elena, McNaughton,Neil
Published 2014

Ion microprobe (SHRIMP) dates complex granulite from Santa Catarina, southern Brazil

by HARTMANN,LÉO A., SANTOS,JOÃO O. S., McNAUGHTON,NEAL J., VASCONCELLOS,MARCOS A. Z., DASILVA,LUIZ C.
Published 2000

Evaluation of Chemical Constituents and Antioxidant Activity of Coconut Water (Cocus nucifera L.) and Caffeic Acid in Cell Culture

by SANTOS,JOãO L.A., BISPO,VANDERSON S., B.C. FILHO,ADRIANO, PINTO,ISABELLA F.D., DANTAS,LUCAS S., VASCONCELOS,DAIANE F., ABREU,FABíULA F., MELO,DANILO A., MATOS,ISAAC A., FREITAS,FLORêNCIO P., GOMES,OSMAR F., MEDEIROS,MARISA H.G., MATOS,HUMBERTO R.
Published 2013