| Texto completo | |
| Autor(es): |
Verma, Sanjeet K.
;
Oliveira, Elson P.
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of South American Earth Sciences; v. 58, p. 9-pg., 2015-03-01. |
| Resumo | |
Fifteen multi-dimensional diagrams for basic and ultrabasic rocks, based on log-ratio transformations, were used to infer tectonic setting for eight case studies of Borborema Province, NE Brazil. The applications of these diagrams indicated the following results: (1) a mid-ocean ridge setting for Forquilha eclogites (Central Ceara domain) during the Mesoproterozoic; (2) an oceanic plateau setting for Algodoes amphibolites (Central Ceara domain) during the Paleoproterozoic; (3) an island arc setting for Brejo Seco amphibolites (Riacho do Pontal belt) during the Proterozoic; (4) an island arc to mid-ocean ridge setting for greenschists of the Monte Orebe Complex (Riacho do Pontal belt) during the Neoproterozoic; (5) within-plate (continental) setting for Vaza Bards domain mafic rocks (Sergipano belt) during the Neoproterozoic; (6) a less precise arc to continental rift for the Gentileza unit metadiorite/gabbro (Sergipano belt) during the Neoproterozoic; (7) an island arc setting for the Novo Gosto unit metabasalts (Sergipano belt) during Neoproterozoic; (8) continental rift setting for Rio Grande do Norte basic rocks during Miocene. (C) 2014 Elsevier Ltd. All rights reserved. (AU) | |
| Processo FAPESP: | 12/07243-3 - Novos diagramas de discriminação multi-dimensionais e modelagem geoquímica aplicados a rochas ígneas arqueanas de cratons brasileiros |
| Beneficiário: | Sanjeet Kumar Verma |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 12/15824-6 - Evolução de terrenos arqueanos do Cráton São Francisco e Província Borborema: implicações para processos geodinâmicos e paleoambientais globais |
| Beneficiário: | Elson Paiva de Oliveira |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |