Geology Of The Forquilha Eclogite Zone, Ceará Central Domain, Northwestern Borborema Province [geologia Da Faixa Eclogítica De Forquilha, Domínio Ceará Central, Noroeste Da Província Borborema]

dc.creatorAncelmi M.F.
dc.creatorSantos T.J.S.D.
dc.creatorReginato R.A.
dc.creatorAmaral W.D.S.
dc.creatorMonteiro L.V.S.
dc.date2013
dc.date2015-06-25T19:11:16Z
dc.date2015-11-26T15:08:42Z
dc.date2015-06-25T19:11:16Z
dc.date2015-11-26T15:08:42Z
dc.date.accessioned2018-03-28T22:19:04Z
dc.date.available2018-03-28T22:19:04Z
dc.identifier
dc.identifierBrazilian Journal Of Geology. Sociedade Brasileira De Geologia, v. 43, n. 2, p. 235 - 252, 2013.
dc.identifier23174889
dc.identifier10.5327/Z2317-48892013000200004
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84898459331&partnerID=40&md5=e51af585a63aa8ef6487e841ea806642
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/88630
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/88630
dc.identifier2-s2.0-84898459331
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1257721
dc.descriptionThe retrograded eclogites of the Forquilha area have been characterized based on detailed geological mapping and systematic petrography. These rocks occur as boudins enclosed into ortho- and paragneisses and rarely in calc-silicate rocks along more than 16 km in a N-S trend, defining the Forquilha Eclogite Zone, in the NW portion of the Borborema Province. This zone is in tectonic contact with rocks of the Ceará Group that dominantly comprises metapelites and subordinately metacarbonatic and metamafic rocks metamorphosed under high-pressure granulite and upper amphibolite facies conditions. The retrograded eclogites show three important stages of retrometamorphism that can be described by the following reactions: 1) [ Grt + Cpx + Qtz + H2O → Pl + Amp] and [Grt + Cpx + Rt + Qtz + H2O → Amp + Ilm + Pl]; 2) [Omp → Di + Pl]; 3) [Grt + Di + Pl + H2O → Amp] and [Grt + Pl + Qtz + H2O → Grt2 + Pl (An) + Amp], besides incipient late formation of Fe-chlorite and actinolite. The retrogressive metamorphism occurred heterogeneously on these metamafic bodies. It was more intensive at the boudin rims and obliterated the higher P-T mineral paragenesis due to intense structurally controlled interaction with metamorphic fluids during progressive exhumation. These occurrences of retrograded eclogites might record a Neoproterozoic suture zone and are important geological features to understand the tectonic evolution of the Ceará Central Domain during the West Gondwana formation.
dc.description43
dc.description2
dc.description235
dc.description252
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dc.languagept
dc.publisherSociedade Brasileira de Geologia
dc.relationBrazilian Journal of Geology
dc.rightsaberto
dc.sourceScopus
dc.titleGeology Of The Forquilha Eclogite Zone, Ceará Central Domain, Northwestern Borborema Province [geologia Da Faixa Eclogítica De Forquilha, Domínio Ceará Central, Noroeste Da Província Borborema]
dc.typeArtículos de revistas


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