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Manganese lithologies of the central area of Ossa-Morena

dc.contributor.authorJiménez Millán, Juan
dc.contributor.authorRuiz de Almodóvar Sel, Gabriel 
dc.contributor.authorVelilla, N.
dc.description.abstractMangenese lithologies from Oliva de la Frontera area occur in the Cumbres-Hinojales unit (Ossa-Morena South-Central Belt) within a Lower Ordovician age volcanosedimentary sequence. Petrographic study allows to differentiate six Mn-Fe lithologies: Mn-crystal tuffs, Mn-shales, cotfcules, Mn-pyroxenoid rich rocks, braunite layers and hematite layers. Al/(Al+Fe-f-Mn) and Na/(Na+K) discriminating ratios support the above classification. Geologic, mineral, textural and geochemical data provide dues about the mixture process among volcanic, terrigene and chemical materials that originated the protolliths o f the metamorphic manganese lithologieses_ES
dc.publisherSociedad Geológica de Españaes_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subject.otherMetamorphic rockses_ES
dc.subject.otherStratiform morphologieses_ES
dc.subject.otherOssa-Morena Zonees_ES
dc.titleLitologías manganesíferas del área central de Ossa-Morena (SW de Badajoz)es_ES
dc.titleManganese lithologies of the central area of Ossa-Morenaeng

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