| Registro completo |
| Provedor de dados: |
Anais da ABC (AABC)
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| País: |
Brazil
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| Título: |
Flow-by-flow chemical stratigraphy and evolution of thirteen Serra Geral Group basalt flows from Vista Alegre, southernmost Brazil
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| Autores: |
Pinto,Viter M
Hartmann,Léo A
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| Data: |
2011-06-01
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| Ano: |
2011
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| Palavras-chave: |
Geochemical correlation
Basalt
Stratigraphy
Serra Geral Group
Vista Alegre
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| Resumo: |
The geochemical characterization of thirteen Serra Geral Group flows in the Vista Alegre region (RS-SC), southern Brazil, displays the homogeneous basaltic composition near 50 wt.% SiO2. Each of the five basal flows (Pitanga-type, high-Ti/Y ~600, TiO2 > 3 wt.%) and eight upper flows (Paranapanema-type, medium Ti/Y ~400, TiO2 > 2 wt.%) can be identified from their chemical composition; sets of flows have parallel variation in chemical composition. The flow-by-flowcorrelation in four sections shows the horizontal position of the flows in three profiles and an approximately 200-m downdrop of the Itapiranga block with respect to the Frederico Westphalen block. The world-class amethyst geode mineralization and the systematic presence of native copper in the basalts make the correlation of great geological and economic significance.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200006
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| Editor: |
Academia Brasileira de Ciências
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| Relação: |
10.1590/S0001-37652011000200006
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| Formato: |
text/html
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| Fonte: |
Anais da Academia Brasileira de Ciências v.83 n.2 2011
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| Direitos: |
info:eu-repo/semantics/openAccess
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