dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:25:23Z
dc.date.accessioned2022-10-05T18:24:30Z
dc.date.available2014-05-27T11:25:23Z
dc.date.available2022-10-05T18:24:30Z
dc.date.created2014-05-27T11:25:23Z
dc.date.issued2010-12-01
dc.identifierGeociencias, v. 29, n. 4, p. 519-526, 2010.
dc.identifier0101-9082
dc.identifierhttp://hdl.handle.net/11449/72124
dc.identifier2-s2.0-79955927222
dc.identifier2-s2.0-79955927222.pdf
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3921217
dc.description.abstractA few examples of supergene ore formation and their interaction with morphogenesis (palaeosurfaces) and weathering mineralogy are discussed. Geomorphological and mineralogical records to characterize palaeosurfaces associate the weathering of primary minerals and their relationship with concentrations of cooper and iron ore deposits in southeastern state of São Paulo, Brazil. We have distinguished two palaeosurfaces generated by several weathering phases and controlled by the geological framework. The first and oldest upper palaeosurfaces (900 - 1000 m a.s.l.), situated in Riberão Branco (Alto do Brancal), were developed on silico-limestones. It is formed by typical iron laterites enriched by secondary products of cooper. The second and younger level palaeosurfaces located in Itapeva (Santa Blandina and Bairro do Sambra). This palaeosurface is formed by copper percolating through the weathered rock (saprolite). Other features can be observed like neo-formed products in laterites. They are classified into two types: clay like silico- cupriferous products (with noticeable amounts of iron) and copper minerals (crysocolla, in their flat slopes). These features allowed the presence of copper ores and their morphogenesis control will help in the exploration and prospecting of supergene ore mineral.
dc.languagespa
dc.relationGeociências
dc.relation0,230
dc.rightsAcesso aberto
dc.sourceScopus
dc.subjectAlto do brancal
dc.subjectBrazil
dc.subjectPalaeosurfaces
dc.subjectSão paulo
dc.subjectSanta blandina
dc.subjectSupergene copper
dc.subjectVale do ribeira
dc.subjectcopper
dc.subjectiron ore
dc.subjectlaterite
dc.subjectmineral exploration
dc.subjectmorphogenesis
dc.subjectore deposit
dc.subjectore-forming fluid
dc.subjectpaleosurface
dc.subjectsaprolite
dc.subjectsupergene process
dc.subjectweathering
dc.subjectBranco Basin
dc.subjectRibeira Valley
dc.subjectRoraima
dc.subjectSao Paulo [Brazil]
dc.titleMapeamento de Paleosuperfícies associadas a identificação de depósitos supérgenos de cobre como ferramenta de exploração mineral na região de Itapeva e Ribeirão Branco- Vale do Ribeira, estado de São Paulo, Brasil
dc.typeArtigo


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