RT Journal Article
T1 Litologías manganesíferas del área central de Ossa-Morena (SW de Badajoz)
T1 Manganese lithologies of the central area of Ossa-Morena
A1 Jiménez Millán, Juan
A1 Ruiz de Almodóvar Sel, Gabriel
A1 Velilla, N.
AB Mangenese 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 lithologies
PB Sociedad Geológica de España
YR 1992
FD 1992
LK http://hdl.handle.net/10272/16350
UL http://hdl.handle.net/10272/16350
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026