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New insights on the ultramafic intrusions surrounding the Kunene Anorthosite Complex (SW Angola) from gravity, magnetic and radiometric data [Abstract]

2023-04Conference object Open access
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dc.contributor.authorRepresas, Patricia
dc.contributor.authorSousa, Pedro
dc.contributor.authorMorais, Igor
dc.contributor.authorCordeiro, Domingos
dc.contributor.authorCarvalho, João
dc.contributor.authorBatista, Maria Joao
dc.contributor.authorDito, Manuel
dc.contributor.authorLlorente, J.
dc.contributor.authorMarques, Fábio
dc.contributor.authorMateus, T.
dc.contributor.authorRodrigues, José Feliciano
dc.contributor.authorLobón, Jose Luis Garcia
dc.contributor.authorde Oliveira, Daniel Pipa Soares
dc.date.accessioned2023-09-28T14:03:14Z
dc.date.available2023-09-28T14:03:14Z
dc.date.issued2023-04
dc.description.abstractABSTRACT: The Kunene Anorthosite Complex (KAC), located in SW Angola, is one of the largest anorthosite structures in the world. Dating from the Mesoproterozoic, its installation process is still not clear. Several mafic and ultramafic outcrops can be found surrounding the KAC. Once considered related with its emplacement, the study of these bodies may help us understand the history of this unique geological feature. While geochronological data show that they are synchronous, or possibly a bit younger, than the embedding granites and migmatites of Paleoproterozoic age, the question arises of whether they are intrusions installed in the host rock or if they are instead recycled remains of older Arch crust. The development of these outcrops in depth provides relevant clues regarding the origin of these bodies and their relationship with the Eburnean (~1.93-2.04 Ga) and Epupa-Namibe (~1.83-1.74 Ga) events. One of these mafic outcrops, designated the Hamutenha outcrop (Huíla Province) exhibits an elongated shape and a NW-SE orientation and is characterized by an internal zonation. Generally, the innermost part is composed of ultramafic rocks of (mostly harzburgites and dunites), with diorites outcropping in its NW and SE borders. The Hamutenha outcrop was previously identified for potentially bearing Cr, Ni and PGE mineralization.pt_PT
dc.description.versionN/Apt_PT
dc.identifier.citationRepresas, Patrícia... et.al - New insights on the ultramafic intrusions surrounding the Kunene Anorthosite Complex (SW Angola) from gravity, magnetic and radiometric data. EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, abstract EGU23-15641pt_PT
dc.identifier.doi10.5194/egusphere-egu23-15641pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.9/4153
dc.language.isoengpt_PT
dc.relation.publisherversionhttps://doi.org/10.5194/egusphere-egu23-15641pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectKunene complexpt_PT
dc.subjectMesoproterozoic igneouspt_PT
dc.subjectGravity modellingpt_PT
dc.subjectAngola (Southwest)pt_PT
dc.titleNew insights on the ultramafic intrusions surrounding the Kunene Anorthosite Complex (SW Angola) from gravity, magnetic and radiometric data [Abstract]pt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceVienna, Austriapt_PT
oaire.citation.titleEGU General Assembly 2023pt_PT
person.familyNameRepresas
person.familyNameMorais
person.familyNameCarvalho
person.familyNameBatista
person.familyNameMarques
person.familyNameRodrigues
person.familyNamede Oliveira
person.givenNamePatricia
person.givenNameIgor
person.givenNameJoão
person.givenNameMaria Joao
person.givenNameFábio
person.givenNameJosé Feliciano
person.givenNameDaniel Pipa Soares
person.identifierA-8080-2008
person.identifier92033
person.identifier2216267
person.identifier.ciencia-id901F-FDE9-581F
person.identifier.ciencia-id1D16-E24A-F4E4
person.identifier.ciencia-idC01A-B2B1-C2D0
person.identifier.ciencia-idB514-EE2B-870D
person.identifier.ciencia-idA11D-DDD7-29F2
person.identifier.orcid0000-0002-2987-2836
person.identifier.orcid0000-0001-9806-7139
person.identifier.orcid0000-0003-2227-3918
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person.identifier.orcid0000-0002-4278-8348
person.identifier.orcid0000-0001-8246-9379
person.identifier.orcid0000-0002-6338-8845
person.identifier.ridAGY-5000-2022
person.identifier.scopus-author-id7005481948
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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