Buscar
Mostrando ítems 11-20 de 197
Morphology and composition of gold in a lateritic profile, Fazenda Pison ""Garimpo"", Amazon, Brazil
(PERGAMON-ELSEVIER SCIENCE LTD, 2008)
This study describes the morphological evolution of gold grains in a lateritic weathering profile in an equatorial rainforest climate. Primary sources of gold are quartz veins associated with shallow granophyric intrusion. ...
Evolução de um perfil laterítico em domo estrutural de Sobradinho, Distrito Federal
(Universidade Federal de UberlândiaBRPrograma de Pós-graduação em GeografiaCiências HumanasUFU, 2016)
Control of the distribution of Mn, Co, Zn, Zr, Ti and REEs during the evolution of lateritic covers above ultramafic complexes
(Journal of Geochemical Exploration, 1991)
Laterites above ultramafic complexes in Brazil and the Philippines consist of in-situ (autochthonous) and partly transported (semi-autochthonous) horizons. Enrichment and distribution of minor and trace elements in the ...
Landsat-7/ETM + and SRTM images as auxiliary tools to identify lateritic profiles-example in bom jesus da Penha (MG).Imagens landsat-7/ETM+ E SRTM como ferramentas auxiliares na identificação de perfis lateríticos – Exemplo em bom jesus da Penha (MG).
(2018-01-01)
The Brazilian territory has large areas covered by lateritic profiles and their studies have diverse motives. These profiles shows an internal structure with horizons that vary, vertically, in their chemical and mineralogical ...
The application of U-isotopes to assess weathering in contrasted soil-water regime in Brazil
(2018-02-01)
This paper presents the use of U-series radionuclides 238U and 234U to evaluate the biogeochemical disequilibrium in soil cover under a contrasted soil-water regime. The approach was applied in three profiles located in ...
Paleosuperfícies e perfis bauxíticos no Planalto de Poços de Caldas, São Paulo/Minas Gerais, Brasil
(2011-12-06)
This work has the objective of correlating altitude with the bauxite profiles in the Poços de Caldas Plateau in order to identify paleosurfaces. Then, bauxite profiles found in the Plateau have been classified and mapped ...
Paleosuperfícies e perfis bauxíticos no Planalto de Poços de Caldas, São Paulo/Minas Gerais, Brasil
(2011-12-06)
This work has the objective of correlating altitude with the bauxite profiles in the Poços de Caldas Plateau in order to identify paleosurfaces. Then, bauxite profiles found in the Plateau have been classified and mapped ...