Repository logo
 
Publication

Late Famennian (latest Strunian) palynomorph assemblages and their role in the Neves Formation depositional environment -The Neves-Corvo mine case study (Iberian Pyrite Belt, Portugal)

2024-10Journal article Open access
Simple item page
dc.contributor.authorMendes, Márcia
dc.contributor.authorPereira, Zélia
dc.contributor.authorMatos, João Xavier
dc.contributor.authorAlbardeiro, Luis
dc.contributor.authorMorais, Igor
dc.contributor.authorAraújo, Vitor
dc.date.accessioned2024-08-28T14:33:13Z
dc.date.available2024-08-28T14:33:13Z
dc.date.issued2024-10
dc.date.updated2024-08-23T09:37:37Z
dc.description.abstractABSTRACT: This research examines palynomorph assemblages preserved in sediments of the Iberian Pyrite Belt (IPB) that host the Neves-Corvo massive sulfide deposit and its importance for mineral exploration. The sediments belong to the Neves Formation, characterized by black shales and minor occurrences of siltstones and cherts, indicative of reduced environmental conditions, favorable to sulfide deposition in a hydrothermal context dominated by submarine felsic volcanism and graben structures. Analysis was performed in barren drill holes (e.g., Monte Novo), as opposed to productive sectors with massive sulfide mineralization and/or stockwork vein networks (e.g., Lombador, Corvo and Semblana deposits) and favorable sectors like Algar & eacute;. The recovered palynological assemblages are assigned to the LN Miospore Biozone, indicating a Late Famennian (latest Strunian) age. Several characteristic species of this age are identified, such as Retispora lepidophyta and Verrucosisporites nitidus in close association with Densosporites spitbergensis, Dictyotriletes fimbriatus, Retusotriletes cf. incohatus, Retusotriletes crassus, Vallatisporites spp. (including V. pusillites, and V. verrucosus). ) . Despite some palynomorphs showing signs of breakage, folding, and indistinctness, no significant preservation or diversity differences were noted between barren and mineralized areas. The high abundance of marine phytoplankton in all studied black shales indicates ecologically stressed setting, dominated by dysoxic to anoxic conditions in a distal marine setting with active felsic volcanism and hydrothermal mineralizing events during Late Famennian time. This geologic context correlates with other IPB deposits and the global latest Devonian anoxic Hangenberg event.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMendes, M., Pereira, Z., Matos, J.X., Albardeiro, L., Morais, I. & Araújo, V. (2024) Late Famennian (latest Strunian) palynomorph assemblages and their role in the Neves Formation depositional environment -The Neves-Corvo mine case study (Iberian Pyrite Belt, Portugal). In: Revue de Micropaléontologie, 2024, vol. 84, article nº 100805. https://doi.org/10.1016/j.revmic.2024.100805pt_PT
dc.identifier.doi10.1016/j.revmic.2024.100805pt_PT
dc.identifier.issn0035-1598
dc.identifier.slugcv-prod-4134323
dc.identifier.urihttp://hdl.handle.net/10400.9/4327
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationEXPLORA Project (Op ALT20-03- 0145-FEDER-000025)pt_PT
dc.relation.publisherversionhttps://doi.org/10.1016/j.revmic.2024.100805pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectPalynostratigraphypt_PT
dc.subjectFamennianpt_PT
dc.subjectNeves-Corvopt_PT
dc.subjectIberian Pyrite Beltpt_PT
dc.titleLate Famennian (latest Strunian) palynomorph assemblages and their role in the Neves Formation depositional environment -The Neves-Corvo mine case study (Iberian Pyrite Belt, Portugal)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleRevue de Micropaléontologiept_PT
oaire.citation.volume84pt_PT
person.familyNameSilva Mendes
person.familyNamePereira
person.familyNameXavier Matos
person.familyNameAlbardeiro
person.familyNameMorais
person.givenNameMárcia Cristina
person.givenNameZélia
person.givenNameJoão Manuel
person.givenNameLuís
person.givenNameIgor
person.identifier.ciencia-idE71E-1CB5-D774
person.identifier.ciencia-id6C1B-ED1C-8F5D
person.identifier.ciencia-idFE16-BE78-D4EA
person.identifier.ciencia-idB81A-A94B-E72A
person.identifier.orcid0000-0003-2290-891X
person.identifier.orcid0000-0003-3056-6219
person.identifier.orcid0000-0002-6108-1030
person.identifier.orcid0000-0002-3826-260X
person.identifier.orcid0000-0001-9806-7139
rcaap.cv.cienciaid6C1B-ED1C-8F5D | Zélia Pereira
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication62179ed8-3ffe-4060-8b9c-e29e4f3e0d27
relation.isAuthorOfPublication5d2bf797-f915-4f53-ae53-166dedd0845a
relation.isAuthorOfPublicationc61d09b7-2204-4dd9-beb3-5574983ce60c
relation.isAuthorOfPublication5abdd90f-64fd-4294-8648-aa45200af857
relation.isAuthorOfPublicationfe37a5f0-7e43-462a-9c66-fbe3e5c9bca6
relation.isAuthorOfPublication.latestForDiscovery62179ed8-3ffe-4060-8b9c-e29e4f3e0d27

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
RevueMicropaléontologie_vol.84_100805.pdf
Size:
2.39 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

GCG - Artigos em revistas internacionais