| Revista: | Brazilian journal of physics |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000146978 |
| ISSN: | 0103-9733 |
| Autores: | Kuzmann, E1 Schuch, L.A Garg, V.K Souza-Junior, P.A. de Guimaraes, E.M Oliveira, A.C. de Vertes, A |
| Instituciones: | 1Universidade de Brasilia, Instituto de Física, Brasilia, Distrito Federal. Brasil 2Universidade Federal de Santa Maria, Departamento de Física, Santa Maria, Rio Grande do Sul. Brasil 3Universidade Federal do Espirito Santo, Departamento de Física, Vitoria, Espirito Santo. Brasil 4Universidade de Brasilia, Departamento de Mineralogia e Petrologia, Brasilia, Distrito Federal. Brasil 5Eotvos Lorand University, Department of Nuclear Chemistry, Budapest. Hungría |
| Año: | 1998 |
| Periodo: | Dic |
| Volumen: | 28 |
| Número: | 4 |
| Paginación: | 434-443 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico |
| Resumen en inglés | Soil samples from the King George Island, Antarctica, have been studied by 57Fe Mossbauer spectroscopy, X-ray diffractometry, radiometry, neutron activation analysis and chemical analytical methods. X-ray diffractometry measurements have identified soils containing different volume ratios of quartz, feldspar, chlorite as well as hematite. The difference in the phase composition and in the iron distribution among the crystallographic sites of iron-bearing minerals (chlorite, magnetite and hematite) of samples from two different depths was derived from the complex Mössbauer spectra. The differences in the mineral composition, iron distribution, concentration of water soluble salts, pH and radioactivity of certain radionucliedes indicate the occurence of chemical weathering of minerals |
| Disciplinas: | Física y astronomía, Geociencias |
| Palabras clave: | Física de materia condensada, Mineralogía, petrología y geoquímica, Suelos, Antártida, Espectroscopía, Mossbauer, Mineralogía, Isla del Rey Jorge |
| Keyword: | Physics and astronomy, Earth sciences, Condensed matter physics, Mineralogy, petrology and geochemistry, Soils, Antarctica, Spectroscopy, Mossbauer, Mineralogy, King George island |
| Texto completo: | Texto completo (Ver HTML) |
