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3D reflection seismic imaging of volcanogenic massive sulphides at Neves-Corvo, Portugal

2022-10Journal article Open access
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dc.contributor.authorDonoso, George
dc.contributor.authorMALEHMIR, Alireza
dc.contributor.authorCarvalho, João
dc.contributor.authorAraújo, Vítor
dc.date.accessioned2023-01-03T14:56:25Z
dc.date.available2023-01-03T14:56:25Z
dc.date.issued2022-10
dc.description.abstractABSTRACT: Three-dimensional reflection seismic data from the Neves-Corvo area, southern Portugal, were reprocessed with the main objective of improving the seismic signature of the Lombador and Semblana volcanogenic massive sulphide deposits. The sensitivity for choosing adequate parameters for targeted imaging, even during the pre-processing stage, such as common-depth point binning size, was studied in detail before the main processing work began helping to optimize bin size parameters; preliminary stacking results from this analysis presented severe acquisition footprint, and seismic targets were not clearly identifiable. Processing results using pre-stack dip move-out and post-stack migration methods show strong moderate to steeply dipping reflections. Several of the observed reflections can be correlated with known lithological contacts, some of which are interpreted to originate from the Semblana and Lombador deposits. Despite the mixed signal-to-noise ratio, the seismic cube reveals both shallow and deep three-dimensional structures, allowing to account for the deposits' lateral extension beyond the capabilities of two-dimensional seismic imaging alone. Given the data processing approach taken it was possible to distinguish strong diffraction patterns, interpreted as originating from faults and edges of the Lombador deposit, illustrating the usefulness of diffraction patterns for better interpretation of geological features in hard-rock environments.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationDonoso, George A... [et.al.] - 3D reflection seismic imaging of volcanogenic massive sulphides at Neves-Corvo, Portugal. In: Geophysical Prospecting, 2022, Early Accesspt_PT
dc.identifier.doi10.1111/1365-2478.13269pt_PT
dc.identifier.eissn1365-2478
dc.identifier.issn0016-8025
dc.identifier.urihttp://hdl.handle.net/10400.9/3981
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWileypt_PT
dc.relationSustainable mineral resources by utilizing new Exploration technologies
dc.relation.publisherversionhttps://doi.org/10.1111/1365-2478.13269pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectSeismic refection datapt_PT
dc.subject3D geological modellingpt_PT
dc.subjectIberian Pyrite Beltpt_PT
dc.subjectNeves-Corvo minept_PT
dc.title3D reflection seismic imaging of volcanogenic massive sulphides at Neves-Corvo, Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleSustainable mineral resources by utilizing new Exploration technologies
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/775971/EU
oaire.citation.titleGeophysical Prospectingpt_PT
oaire.fundingStreamH2020
person.familyNameDonoso
person.familyNameMALEHMIR
person.familyNameCarvalho
person.givenNameGeorge
person.givenNameAlireza
person.givenNameJoão
person.identifier.ciencia-id1D16-E24A-F4E4
person.identifier.orcid0000-0002-7087-4163
person.identifier.orcid0000-0003-1241-2988
person.identifier.orcid0000-0003-2227-3918
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication4e8c5339-2619-4ca1-a734-17ed0da97fbe
relation.isAuthorOfPublication3cce4c3b-a71e-49fc-b9f2-868dbae47386
relation.isAuthorOfPublication363e9adf-6808-4881-bbe7-41a6fe7da470
relation.isAuthorOfPublication.latestForDiscovery4e8c5339-2619-4ca1-a734-17ed0da97fbe
relation.isProjectOfPublication71fa7572-82ea-429e-8cb0-b307b49c10af
relation.isProjectOfPublication.latestForDiscovery71fa7572-82ea-429e-8cb0-b307b49c10af

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