Age, source, and regional stratigraphy of the Roraima Supergroup and Roraima-like outliers in northern South America based on U-Pb geochronology

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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

New 207Pb/206Pb ion-microprobe dates from the basement underlying the Roraima Supergroup, from sandstones and tuffs within the supergroup, and from associated mafic intrusions establish new temporal framework for this major stratigraphic unit in northern South America. Zircons from the tuffs within...

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Bibliographic Details
Main Authors:	Santos, J., Potter, P., Reis, N., Hartmann, L., Fletcher, Ian, McNaughton, Neal
Format:	Journal Article
Published:	Geological Society of America 2003
Online Access:	http://hdl.handle.net/20.500.11937/30872

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