1993
DOI: 10.1016/0301-9268(93)90028-z
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Shoshonitic and ultrapotassic Proterozoic intrusive suites in the Cachoeirinha-Salgueiro belt, NE Brazil: a transition from collisional to post-collisional magmatism

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Cited by 28 publications
(13 citation statements)
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“…Examples include the ultrapotassic syenitic Triunfo pluton, located in the so-called Pianc6 Alto-Brigida terrane (Ferreira et al, 1997), and the shoshonitic Bom Jardim and Toritama plutons, emplaced along the southern border of the proposed Alto-Pajeú terrane (Silva Filho, et al, 1993;. Sm-Nd model ages for the Caruaru-Arcoverde and Campina Grande plutons concentrated around 2.0 Ga (Table 1) suggest a major metasomatic event in the lithospheric mantle during the Transamazonian tectonic cycle (~2.0 Ga).…”
Section: Discussionmentioning
confidence: 97%
“…Examples include the ultrapotassic syenitic Triunfo pluton, located in the so-called Pianc6 Alto-Brigida terrane (Ferreira et al, 1997), and the shoshonitic Bom Jardim and Toritama plutons, emplaced along the southern border of the proposed Alto-Pajeú terrane (Silva Filho, et al, 1993;. Sm-Nd model ages for the Caruaru-Arcoverde and Campina Grande plutons concentrated around 2.0 Ga (Table 1) suggest a major metasomatic event in the lithospheric mantle during the Transamazonian tectonic cycle (~2.0 Ga).…”
Section: Discussionmentioning
confidence: 97%
“…There is no U-Pb isotopic data for the suites described above. Rb-Sr isochronic data indicate ages of 633 to 620 Ma for the normal to high-K calc-alkalic super-suite (Sial et al 1989, Sial 1993 and 557 Ma for the trondhjemitic granite suite (Silva Filho et al 1993). This last data is inconsistent with the age normally indicated for the peralkalic ultrapotassic super-suite (around 566 Ma, according to Ferreira et al 1997b), that cut the suite of trondhjemitic affinity.…”
Section: Brasiliano Granitic Suites and Super-suite Of The Piancó-altmentioning
confidence: 89%
“…O Terreno Cachoeirinha−Salgueiro do Domínio Transversal da Província Borborema, nordeste do Brasil, foi retrabalhado durante os períodos Criogeniano−Ediacarano tardio e caracteriza-se por intensa atividade de intrusões intermediárias a ácidas de diversas séries, em três intervalos de tempo (Ferreira 2010;Ferreira et al 1998Ferreira et al , 2004Ferreira et al , 2011Guimarães et al 2004;Guimarães et al 2011;Sial et al 2008): (a) plutons cálcio-alcalinos de alto potássio, cálcio-alcalinos e shoshoníticos, com epidoto magmático (mEp) durante o intervalo 650-620 Ma (b) intrusões cálcio-alcalinas de alto potássio sem epidoto magmático, shoshoníticas e ultra-potássicas no intervalo de tempo (590-560 Ma) e (c) um intervalo final, no início do Cambriano (545-520 Ma) caracterizado por diques de sienitos peralcalinos/ultrapotássicos e raros granitos do tipo−A que marcaram o final do ciclo Brasiliano nessa região (Silva Filho et al 1993;Ferreira & Sial et al 1997;Guimarães et al 2000;Guimarães et al 2005;Almeida et al 2002;Ferreira et al 2004).…”
Section: Introductionunclassified