983 resultados para Biblioteca Olegário Vale.


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Se incluyó además en la investigación la Biblioteca de la Fundación Educacional "Roberto Bellarmino" y la Biblioteca de la Facultad Latinoamericana de Ciencias Sociales (FLACSO)

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Se incluyó además en la investigación la Biblioteca de la Fundación Educacional "Roberto Bellarmino" y la Biblioteca del Centro de Investigación y Planificación del Medio Ambiente (CIPMA)

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Se incluyó además en la investigación la Biblioteca de la Fundación Educacional "Roberto Bellarmino" y la Biblioteca de la Facultad Latinoamericana de Ciencias Sociales (FLACSO)

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Incluye anexo con trabajos ingresados con posterioridad a diciembre 1993.

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Documento ingresado con el símbolo E/CEPAL/BIB/L.25

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Recopila la documentación en la que el ILPES ha cumplido un papel ya sea de autor, organizador de seminario o conferencia, u organismo ejecutor de proyecto

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Recopila la documentación en la que el ILPES ha cumplido un papel ya sea de autor, organizador de seminario o conferencia, u organismo ejecutor de proyecto

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Tomos 3 al 4 en proceso de preparación

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La bibliografía comprende artículos, comentarios, documentos, conferencias, discursos, etc. ordenados cronológicamente desde 1928-1986.

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A 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.