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Léo Afraneo Hartmann
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Journal Article

Predominance of high Th/U, magmatic zircon in Brazilian Shield sandstones

Léo Afraneo Hartmann, João Orestes S. Santos
Journal: Geology
Published: 01 January 2004
Geology (2004) 32 (1): 73–76.
DOI: https://doi.org/10.1130/G20007.1
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Age, source, and regional stratigraphy of the Roraima Supergroup and Roraima-like outliers in northern South America based on U-Pb geochronology

João Orestes Schneider Santos, Paul Edwin Potter, Nélson Joaquim Reis, Léo Afraneo Hartmann, Ian Robert Fletcher, Neal J. McNaughton
Journal: GSA Bulletin
Published: 01 March 2003
GSA Bulletin (2003) 115 (3): 331–348.
DOI: https://doi.org/10.1130/0016-7606(2003)115<0331:ASARSO>2.0.CO;2
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Zircon U-Pb SHRIMP dating of a Neoproterozoic overprint in Paleoproterozoic granitic-gneissic terranes, southern Brazil

Luiz Carlos da Silva, Léo Afraneo Hartmann, Neal J. McNaughton, Ian Fletcher
Published: 01 May 2000
American Mineralogist (2000) 85 (5-6): 649–667.
DOI: https://doi.org/10.2138/am-2000-5-602
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