A Mineral Potential Mapping Approach For Supergene Nickel Deposits In Southwestern Sao Francisco Craton, Brazil

Uma Abordagem De Mapeamento De Potencial Mineral Dos Depósitos De Níquel Supérgeno Do Sudeste Do Cráton Do São Francisco

dc.creatorMotta
dc.creatorJoao Gabriel; Faria Junior
dc.creatorIlio Rodarte
dc.date2016
dc.datejun
dc.date2017-11-13T13:45:34Z
dc.date2017-11-13T13:45:34Z
dc.date.accessioned2018-03-29T06:00:13Z
dc.date.available2018-03-29T06:00:13Z
dc.identifierBrazilian Journal Of Geology. Soc Brasileira Geologia, v. 46, p. 261 - 273, 2016.
dc.identifier2317-4889
dc.identifier2317-4692
dc.identifierWOS:000384766700007
dc.identifier10.1590/2317-4889201620160021
dc.identifierhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892016000200261&lng=en&tlng=en
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/329035
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1366060
dc.descriptionSouthwestern Sao Francisco Craton makes limit with Braslia 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. This greenstone belt hosts two-nickel deposits (Morro do Niquel and O'Toole, respectively silicate and sulfide types) and occurrences. This 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 identification 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 effectively known deposits and occurrences with its outputs highlighting possibilities for unknown resources in this under-explored terrain.
dc.description46
dc.description2
dc.description261
dc.description273
dc.languageEnglish
dc.publisherSoc Brasileira Geologia
dc.publisherSão Paulo
dc.relationBrazilian Journal of Geology
dc.rightsaberto
dc.sourceWOS
dc.subjectProspection
dc.subjectMineral Exploration
dc.subjectGeographic Information Systems
dc.titleA Mineral Potential Mapping Approach For Supergene Nickel Deposits In Southwestern Sao Francisco Craton, Brazil
dc.titleUma Abordagem De Mapeamento De Potencial Mineral Dos Depósitos De Níquel Supérgeno Do Sudeste Do Cráton Do São Francisco
dc.typeArtículos de revistas


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