3.3Ga SHRIMP U-Pb zircon age of a felsic metavolcanic rock from the Mundo Novo greenstone belt in the San Francisco craton, Bahia (NE Brazil)
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Peucat, J-J; Mascarenhas, J F; Barbosa, Johildo F. S.; de Souza, S L; Marinho, M M; Fanning, Christopher; Leite, C M M
Description
Felsic metavolcanics associated with supracrustal rocks provide U-Pb zircon and Sm-Nd TDM ages of approximately 3.3 Ga, which establish an Archean age of the Mundo Novo greenstone belt. A granodioritic gneiss from the Mairi complex, located on the eastern boundary of the Mundo Novo greenstone belt, exhibits a zircon evaporation minimum age of 3.04 Ga and a Nd model age of 3.2 Ga. These results constrain the occurrence of at least three major geological units in this area: the Archean Mundo Novo...[Show more]
Collections | ANU Research Publications |
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Date published: | 2002 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/94244 |
Source: | Journal of South American Earth Sciences |
DOI: | 10.1016/S0895-9811(02)00044-5 |
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01_Peucat_3.3Ga_SHRIMP_U-Pb_zircon_age_2002.pdf | 461.24 kB | Adobe PDF | Request a copy |
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