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Mineralogia e petrologia dos granitos variscos sin-D3 da região de Santa Comba de Rossas, norte de Portugal

dc.contributor.authorTeixeira, R. J. S.
dc.contributor.authorGomes, Maria Elisa Preto
dc.contributor.authorSilva, Paulo Bravo
dc.contributor.authorMeireles, Carlos
dc.date.accessioned2023-07-28T15:14:41Z
dc.date.available2023-07-28T15:14:41Z
dc.date.issued2023-07
dc.descriptionResumo alargadopt_PT
dc.description.abstractSUMMARY: In the Santa Comba de Rossas - Paredes area, a granitic complex (G1-G3) was emplaced during the syn-kinematic stages of the Variscan Orogeny, at 317.9 ± 8.7 Ma, as determined by whole rock Rb-Sr dating. The complex intruded Silurian metasediments, from the Parauthocthonous Domain of Galicia – TrĆ”s-os-Montes Zone, in a NW-SE trending antiform formed during the D1 and D3 deformation phases, but was itself affected by ductile and brittle deformation. Geochemical and isotopic characteristics suggest that the biotite > muscovite granite G1 and the biotite ā‰ˆ muscovite granite G2 correspond to distinct pulses of magma formed by partial melting of metasedimentary materials that subsequently evolved by fractional crystallization. This process was responsible for the increase in Sn content in those granites and, most probably, for the occurrence of the exocontact muscovite granite G3, which is the richest in Sn (77 ppm), due to a higher degree of fractional crystallization.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationTeixeira, R.J.S.; Gomes, M. Elisa Preto; Silva, Paulo Bravo; Meireles, Carlos (2023) - Mineralogia e petrologia dos granitos variscos sin-D3 da região de Santa Comba de Rossas, norte de Portugal. In: Lopes, F. C., Dinis, P. A., Duarte, L. V. e Cunha, P. P. (Coords.). XI Congresso Nacional de Geologia: Geociências e Desafios Globais. Livro de Resumos. Coimbra, 16- 20 julho de 2023, Departamento de Ciências da Terra da Universidade de Coimbra (eds.), p. 43-44. ISBN: 978-989-98914-8-7pt_PT
dc.identifier.isbn978-989-98914-8-7
dc.identifier.urihttp://hdl.handle.net/10400.9/4083
dc.language.isoporpt_PT
dc.publisherDepartamento de CiĆŖncias da Terra da Universidade de Coimbrapt_PT
dc.relationGeosciences Center
dc.relationGeosciences Center
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectS-type granitespt_PT
dc.subjectRb-Sr datingpt_PT
dc.subjectFractional crystallizationpt_PT
dc.subjectTinpt_PT
dc.subjectGranitos do tipo Spt_PT
dc.subjectDatação Rb-Srpt_PT
dc.subjectCristalização fraccionadapt_PT
dc.subjectEstanhopt_PT
dc.subjectPortugal (Norte)pt_PT
dc.titleMineralogia e petrologia dos granitos variscos sin-D3 da região de Santa Comba de Rossas, norte de Portugalpt_PT
dc.title.alternativeMineralogy and petrology of syn-D3 Variscan granites from Santa Comba de Rossas region, northern Portugalpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleGeosciences Center
oaire.awardTitleGeosciences Center
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00073%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00073%2F2020/PT
oaire.citation.conferencePlaceCoimbra, Portugalpt_PT
oaire.citation.endPage44pt_PT
oaire.citation.startPage43pt_PT
oaire.citation.titleXI Congresso Nacional de Geologia: GeociĆŖncias e Desafios Globaispt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNamePreto Gomes
person.familyNamePinto de Meireles
person.givenNameMaria Elisa
person.givenNameCarlos Augusto
person.identifier.ciencia-id8F18-7134-14DB
person.identifier.ciencia-id1A14-BFCF-0DEA
person.identifier.orcid0000-0003-3105-8435
person.identifier.orcid0000-0002-5130-224X
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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relation.isAuthorOfPublicationae541720-a10b-454b-9c20-c4af131b9b8d
relation.isAuthorOfPublication.latestForDiscovery3a2c44cf-4f0b-4a06-b9c7-04cc0b0c488d
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