Structural and Compositional Evolution of Cr-Spinels and Hornblends, Palma Group, Rio Grande do Sul, Brasil

dc.contributorpt-BR
dc.creatorHARTMANN, LÉO AFRANEO
dc.creatorVASCONCELLOS, MARCOS ANTONIO
dc.creatorBITTENCOURT, MARIA DE FÁTIMA
dc.creatorCASTRO, JOÃO
dc.creatorFABIÃO, JULIANA
dc.creatorMONTEIRO, ANDRÉIA
dc.creatorPIRES, KAREN
dc.date2000-06-30
dc.date.accessioned2018-11-07T21:59:35Z
dc.date.available2018-11-07T21:59:35Z
dc.identifierhttps://seer.ufrgs.br/PesquisasemGeociencias/article/view/20175
dc.identifier10.22456/1807-9806.20175
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/2192370
dc.descriptionOne amphibolite facies metamorphic event is registered in chromites and hornblendes from the Palma Group serpentinites and meta-andesites, Brazil's southernmost Rio Grande do Sui Slate. Metamorphism was apparently caused by syntectonic injection of voluminous Cambaí Group meta-granitoids and not by post-tectonic Jaguari Granite intrusion. Regional metamorphic hornblendes are in direct contact with magmatic pargasites, which indicates that it was the first metamorphic event in the area. Both hornblendes in Campestre Formation and Crspinels in Cerro da Cruz Formation are little zoned, an indication that only one metamorphic event was of regional extent. Recrystallization to chlorite + epidote greenschist facies parageneses is restricted to shear zones and volumetrically small.pt-BR
dc.formatapplication/pdf
dc.languagepor
dc.publisherInstituto de Geociências /Universidade Federal do Rio Grande do Sulpt-BR
dc.relationhttps://seer.ufrgs.br/PesquisasemGeociencias/article/view/20175/pdf
dc.sourcePesquisas em Geociências; v. 27, n. 1 (2000): Pesquisas em Geociências; 15-27pt-BR
dc.source1807-9806
dc.source1518-2398
dc.subjectGeociências;Geologia;Geografia;Geodésia;Paleontologia;Engenharia Cartográficapt-BR
dc.subjectCr-spinels; hornblende; electron microprobe; backscattered electron.pt-BR
dc.subjectGeociênciaspt-BR
dc.titleStructural and Compositional Evolution of Cr-Spinels and Hornblends, Palma Group, Rio Grande do Sul, Brasilpt-BR
dc.typeArtículos de revistas
dc.typeArtículos de revistas
dc.coverageRio Grande do Sul; Brasilpt-BR
dc.coveragept-BR
dc.coveragept-BR


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