Repository logo
 
Publication

The old central igneous complexes of Sal, Boa Vista and Maio islands: Implications for 17 Ma of isotopic evolution of the Cape Verde archipelago

2025-02Journal article Open access
Simple item page
datacite.subject.fosCiências Naturais::Ciências da Terra e do Ambiente
datacite.subject.sdg15:Proteger a Vida Terrestre
dc.contributor.authorVillaseca, Carlos
dc.contributor.authorOrejana, David
dc.contributor.authorHuertas, Maria J.
dc.contributor.authorAncochea, Eumenio
dc.contributor.authorIgnacio, Cristina
dc.contributor.authorMata, João
dc.contributor.authorCaldeira, Rita
dc.contributor.authorGarcia-Rodriguez, Maria
dc.contributor.authorMoreno, Juan A.
dc.contributor.authorPerez-Soba, Cecilia
dc.date.accessioned2025-03-20T15:59:49Z
dc.date.available2025-03-20T15:59:49Z
dc.date.issued2025-02
dc.description.abstractABSTRACT: The central igneous complexes of the easternmost islands (Sal, Boa Vista and Maio) preserve some of the most ancient outcropping rocks of the Cape Verde (CV) archipelago. These Early to Middle Miocene (about 25 to 12 Ma) complexes show marked isotopic differences between mafic rocks from the northern (Sal and Boa Vista) and the southern Maio Island, the latter showing lower 143Nd/144Nd, 206Pb/204Pb, 207Pb/204Pb, and higher 87Sr/86Sr ratios. The main mantle plume composition beneath Cape Verde is here considered to be dominated by the FOZO component. Our data supports previous models suggesting the incorporation to plume components of minor DMM mantle sources in the northern CV island alignment, whereas mixing with the EM1 pole is prevalent on the southern CV islands. These isotopic differences are evident since the early stages of Cape Verde magmatism. The Late Miocene to Holocene time period (7 to 1.7 Ma) is characterized by the irruption of silica-undersaturated and carbonatite magmas with a relatively homogeneous isotopic composition and highly radiogenic Pb signatures (206Pb/204Pb up to 20.6 in carbonatitic rocks and 20.2 in silicate rocks) throughout most of the Cape Verde archipelago. During this transitional stage, the input of this new HIMU mantle component overprinted the previous mixing of the main FOZO plume component with shallow mantle members (DMM, EM1) of minor contribution.eng
dc.identifier.citationVillaseca, C., Orejana, D., Huertas, M.J., Ancochea, E., Ignacio, C., Mata, J., Caldeira, R., García-Rodríguez, M., Moreno, J.A. & Pérez-Soba, C. (2025) The old central igneous complexes of Sal, Boa Vista and Maio islands: Implications for 17 Ma of isotopic evolution of the Cape Verde archipelago. In: Lithos, 2025, vol. 498, article 107975. https://doi.org/10.1016/j.lithos.2025.107975
dc.identifier.doi10.1016/j.lithos.2025.107975
dc.identifier.issn0024-4937
dc.identifier.urihttp://hdl.handle.net/10400.9/5614
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationInstituto Dom Luiz
dc.relationLA/P/0068/2020
dc.relation.hasversionhttps://www.sciencedirect.com/science/article/pii/S0024493725000349?via%3Dihub
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectGeochemistry
dc.subjectMagmatism
dc.subjectCape Verde archipelago
dc.titleThe old central igneous complexes of Sal, Boa Vista and Maio islands: Implications for 17 Ma of isotopic evolution of the Cape Verde archipelagoeng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleInstituto Dom Luiz
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50019%2F2020/PT
oaire.citation.titleLithos: Journal of Petrology, Mineralogy and Geochemistry
oaire.citation.volume498
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameMata
person.familyNameCaldeira
person.givenNameJoão
person.givenNameRita
person.identifierI-3352-2012
person.identifier.ciencia-id4312-8A60-15E3
person.identifier.ciencia-idF810-1AEB-E73D
person.identifier.orcid0000-0001-5769-7708
person.identifier.orcid0000-0002-4379-1311
person.identifier.scopus-author-id7102806167
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
relation.isAuthorOfPublicationa7da0053-32e2-4701-9715-10e73b583207
relation.isAuthorOfPublicationaa38046a-ff7d-4c32-b8e7-05b2eaee5dbf
relation.isAuthorOfPublication.latestForDiscoverya7da0053-32e2-4701-9715-10e73b583207
relation.isProjectOfPublication3de2879d-98bc-4e52-9be2-e10e258ed2ac
relation.isProjectOfPublication.latestForDiscovery3de2879d-98bc-4e52-9be2-e10e258ed2ac

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Lithos_vol.498_107975.pdf
Size:
933.8 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
4.03 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

GCG - Artigos em revistas internacionais