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Pre-Mesoproterozoic crustal architecture and implications for the Mesoproterozoic evolution of the SW Angolan Shield from structural, geochemical, and isotopic evidence [Resumo]

2025-07Documento de conferência Acesso aberto
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datacite.subject.fosCiências Naturais::Ciências da Terra e do Ambiente
dc.contributor.authorMerino-Martínez, E.
dc.contributor.authorFerreira, Ezequiel
dc.contributor.authorValverde-Vaquero, Pablo
dc.contributor.authorRodrigues, José Feliciano
dc.contributor.authorEscuder-Viruete, Javier
dc.contributor.authorGarcia-Lobon, Jose Luis
dc.contributor.authorBeranoaguirre, Aratz
dc.contributor.authorFeria, María Carmen
dc.contributor.authorRey-Moral, Carmen
dc.contributor.authorSilva, Paulo Bravo
dc.contributor.authorGonzález-Cuadra, Pablo
dc.contributor.authorSousa, João Carlo
dc.contributor.authorPotti, Julián
dc.contributor.authorMáximo, J.
dc.contributor.authorGutiérrez-Medina, M.
dc.contributor.authorGumiel, J.C.
dc.contributor.authorGalán, Gustavo
dc.contributor.authorMochales, Tania
dc.contributor.authorManuel, José
dc.contributor.authorManuel, José
dc.contributor.authorTassinari, Colombo C. G.
dc.contributor.authorMontero, P.
dc.contributor.authorSato, Kei
dc.contributor.authorFuenlabrada, José Manuel
dc.contributor.authorGalindo, Carmen
dc.date.accessioned2026-02-12T10:39:02Z
dc.date.available2026-02-12T10:39:02Z
dc.date.issued2025-07
dc.description.abstractABSTRACT: Several studies suggest the existence of multiple tectonic domains within the Angolan Shield [1], yet the Archaean to Palaeoproterozoic basement of SW Angola and NW Namibia remains largely unexplored. Similarly, distinct Mesoproterozoic (1534–1065 Ma) igneous suites are documented in the SW Angolan Shield, including the largest known gabbro-anorthosite complex (~42,500 km²), the Kunene Complex (KC), but the geological evolution of the region during the Mesoproterozoic is still debated. Traditionally linked to anorogenic contexts [2], recent studies propose a collisional setting for the KC [3]. A combined isotopic (U-Pb, Sr-Nd), gravimetric, and structural approach allows for a refined crustal framework of the SW Angolan Shield and provides new insights into the emplacement of the KC and the regional evolution of the southern Congo Craton. This integrated dataset delineates several Archaean to Palaeoproterozoic domains surrounding the KC, featured by a specific gravimetric response and geochronological time span: Cassinga Zone (2667–2568 Ma and 1982–1971 Ma), Central Eburnean Zone (2038–1947 Ma; intruded by 1844–1744 Ma magmatism in its southern region, the Lubango Area), Namibe and Epupa Zones (1861–1739 Ma), and the Kalahari Area (~1775 Ma?). These contrasting crustal domains significantly influenced the genesis and emplacement of the KC.eng
dc.identifier.citationMerino-Martinez, E., Ferreira, E., Valverde-Vaquero, P., Rodrigues, J. F., Escuder-Viruete, J., Garcia-Lobon, J. L., Beranoaguirre, A., Feria, M. C., Rey-Moral, C., Silva, P. B., Gonzalez-Cuadra, P., Souza, J. C., Potti, J., Maximo, J., Gutierrez-Medina, M., Gumiel, J. C., Galan, G., Mochales, T., Manuel, J., Cordeiro, D., Tassinari, C., Montero, P., Sato, K., Fuenlabrada, J. M., & Galindo, C. (2025). Pre-Mesoproterozoic crustal architecture and implications for the Mesoproterozoic evolution of the SW Angolan Shield from structural, geochemical, and isotopic evidence. In: Goldschmidt2025 - International Conference on Geochemistry, Abstract 31707, Prague, Czech Republic, 6-11 July, 2025. https://doi.org/10.7185/gold2025.31707
dc.identifier.doi10.7185/gold2025.31707
dc.identifier.urihttp://hdl.handle.net/10400.9/6259
dc.language.isoeng
dc.peerreviewedno
dc.publisherGeochemical Society
dc.relation.hasversionhttps://goldschmidtabstracts.info/abstracts/abstractView?doi=10.7185/gold2025.31707
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectGeology
dc.subjectU-Pb geochronology
dc.subjectMesoproterozoic igneous
dc.subjectPalaeoproterozoic
dc.subjectGeochemistry
dc.subjectKunene complex
dc.subjectAngola (Southwest)
dc.titlePre-Mesoproterozoic crustal architecture and implications for the Mesoproterozoic evolution of the SW Angolan Shield from structural, geochemical, and isotopic evidence [Resumo]eng
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferenceDate2025-07
oaire.citation.conferencePlacePrague, Czech Republic
oaire.citation.titleGoldschmidt2025
oaire.versionhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43
person.familyNameValverde-Vaquero
person.familyNameRodrigues
person.familyNameBeranoaguirre
person.givenNamePablo
person.givenNameJosé Feliciano
person.givenNameAratz
person.identifier.orcid0000-0002-2184-0848
person.identifier.orcid0000-0001-8246-9379
person.identifier.orcid0000-0002-1137-6498
person.identifier.ridM-3394-2014
person.identifier.scopus-author-id55911124900
person.identifier.scopus-author-id54986215400
relation.isAuthorOfPublication46190466-57cf-440e-beda-9e8cf79582d5
relation.isAuthorOfPublication8a316992-104c-4157-af2e-3981eabe75ff
relation.isAuthorOfPublicationc8545eb3-3fef-4478-9a95-b08256d6ebbf
relation.isAuthorOfPublication.latestForDiscovery46190466-57cf-440e-beda-9e8cf79582d5

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