A mineral potential mapping approach for supergene nickel deposits in southwestern São Francisco Craton, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/2317-4889201620160021 http://hdl.handle.net/11449/168932 |
Resumo: | Southwestern São Francisco Craton makes limit with Brasília thrust-fold belt and involves rocks from Archean to formed during the Brasiliano-Pan Africano Neoproterozoic event, including a mafic-ultramafic belt (Morro do Ferro Greenstone Belt) hosted along the Archean counterpart. Tis greenstone belt hosts two-nickel deposits (Morro do Níquel and O'Toole, respectively silicate and sulfide types) and occurrences. Tis study applies an empirical-conceptual model for lateritic nickel deposits formation into geographic information systems with aerogeophysical data (magnetic and gamma-spectrometry) and digital elevation models (terrain relief and slope). Our contribution aims for nickel deposits favorability mapping using a simple mathematical operator over a supporting spatial database translating the conceptual exploration model into evidential layers for geological processes involved on deposit formation. Evidential layers constructed for identi-fication of elements pertaining the supergene nickel mineral system are given by analytic signal amplitude maps, thorium over potassium ratio images, and digital elevation models and slope maps, derived from shuttle radar topography mission digital elevation models. Evidential layers integration through binary layers algebraic sum identified efectively known deposits and occurrences with its outputs highlighting possibilities for unknown resources in this under-explored terrain. |
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A mineral potential mapping approach for supergene nickel deposits in southwestern São Francisco Craton, BrazilGeographic information systemsMineral explorationProspectionSouthwestern São Francisco Craton makes limit with Brasília thrust-fold belt and involves rocks from Archean to formed during the Brasiliano-Pan Africano Neoproterozoic event, including a mafic-ultramafic belt (Morro do Ferro Greenstone Belt) hosted along the Archean counterpart. Tis greenstone belt hosts two-nickel deposits (Morro do Níquel and O'Toole, respectively silicate and sulfide types) and occurrences. Tis study applies an empirical-conceptual model for lateritic nickel deposits formation into geographic information systems with aerogeophysical data (magnetic and gamma-spectrometry) and digital elevation models (terrain relief and slope). Our contribution aims for nickel deposits favorability mapping using a simple mathematical operator over a supporting spatial database translating the conceptual exploration model into evidential layers for geological processes involved on deposit formation. Evidential layers constructed for identi-fication of elements pertaining the supergene nickel mineral system are given by analytic signal amplitude maps, thorium over potassium ratio images, and digital elevation models and slope maps, derived from shuttle radar topography mission digital elevation models. Evidential layers integration through binary layers algebraic sum identified efectively known deposits and occurrences with its outputs highlighting possibilities for unknown resources in this under-explored terrain.Instituto de Geociências Universidade Estadual de Campinas-UNICAMPPrograma de Pós-Graduação em Geociências e Meio Ambiente Universidade Estadual Paulista Júlio de Mesquita Filho - UNESPPrograma de Pós-Graduação em Geociências e Meio Ambiente Universidade Estadual Paulista Júlio de Mesquita Filho - UNESPUniversidade Estadual de Campinas (UNICAMP)Universidade Estadual Paulista (Unesp)Motta, João GabrielFaria, Ilio Rodarte [UNESP]2018-12-11T16:43:40Z2018-12-11T16:43:40Z2016-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article261-273application/pdfhttp://dx.doi.org/10.1590/2317-4889201620160021Brazilian Journal of Geology, v. 46, n. 2, p. 261-273, 2016.2317-46922317-4889http://hdl.handle.net/11449/16893210.1590/2317-4889201620160021S2317-488920160002002612-s2.0-84984684776S2317-48892016000200261.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Journal of Geology0,6080,608info:eu-repo/semantics/openAccess2024-01-16T06:31:23Zoai:repositorio.unesp.br:11449/168932Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:09:56.066121Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A mineral potential mapping approach for supergene nickel deposits in southwestern São Francisco Craton, Brazil |
title |
A mineral potential mapping approach for supergene nickel deposits in southwestern São Francisco Craton, Brazil |
spellingShingle |
A mineral potential mapping approach for supergene nickel deposits in southwestern São Francisco Craton, Brazil Motta, João Gabriel Geographic information systems Mineral exploration Prospection |
title_short |
A mineral potential mapping approach for supergene nickel deposits in southwestern São Francisco Craton, Brazil |
title_full |
A mineral potential mapping approach for supergene nickel deposits in southwestern São Francisco Craton, Brazil |
title_fullStr |
A mineral potential mapping approach for supergene nickel deposits in southwestern São Francisco Craton, Brazil |
title_full_unstemmed |
A mineral potential mapping approach for supergene nickel deposits in southwestern São Francisco Craton, Brazil |
title_sort |
A mineral potential mapping approach for supergene nickel deposits in southwestern São Francisco Craton, Brazil |
author |
Motta, João Gabriel |
author_facet |
Motta, João Gabriel Faria, Ilio Rodarte [UNESP] |
author_role |
author |
author2 |
Faria, Ilio Rodarte [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Campinas (UNICAMP) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Motta, João Gabriel Faria, Ilio Rodarte [UNESP] |
dc.subject.por.fl_str_mv |
Geographic information systems Mineral exploration Prospection |
topic |
Geographic information systems Mineral exploration Prospection |
description |
Southwestern São Francisco Craton makes limit with Brasília thrust-fold belt and involves rocks from Archean to formed during the Brasiliano-Pan Africano Neoproterozoic event, including a mafic-ultramafic belt (Morro do Ferro Greenstone Belt) hosted along the Archean counterpart. Tis greenstone belt hosts two-nickel deposits (Morro do Níquel and O'Toole, respectively silicate and sulfide types) and occurrences. Tis study applies an empirical-conceptual model for lateritic nickel deposits formation into geographic information systems with aerogeophysical data (magnetic and gamma-spectrometry) and digital elevation models (terrain relief and slope). Our contribution aims for nickel deposits favorability mapping using a simple mathematical operator over a supporting spatial database translating the conceptual exploration model into evidential layers for geological processes involved on deposit formation. Evidential layers constructed for identi-fication of elements pertaining the supergene nickel mineral system are given by analytic signal amplitude maps, thorium over potassium ratio images, and digital elevation models and slope maps, derived from shuttle radar topography mission digital elevation models. Evidential layers integration through binary layers algebraic sum identified efectively known deposits and occurrences with its outputs highlighting possibilities for unknown resources in this under-explored terrain. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-06-01 2018-12-11T16:43:40Z 2018-12-11T16:43:40Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/2317-4889201620160021 Brazilian Journal of Geology, v. 46, n. 2, p. 261-273, 2016. 2317-4692 2317-4889 http://hdl.handle.net/11449/168932 10.1590/2317-4889201620160021 S2317-48892016000200261 2-s2.0-84984684776 S2317-48892016000200261.pdf |
url |
http://dx.doi.org/10.1590/2317-4889201620160021 http://hdl.handle.net/11449/168932 |
identifier_str_mv |
Brazilian Journal of Geology, v. 46, n. 2, p. 261-273, 2016. 2317-4692 2317-4889 10.1590/2317-4889201620160021 S2317-48892016000200261 2-s2.0-84984684776 S2317-48892016000200261.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Brazilian Journal of Geology 0,608 0,608 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
261-273 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129496263426048 |