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https://repositorio.ufba.br/handle/ri/8684
metadata.dc.type: | Artigo de Periódico |
Título : | Use of 234U/238U disequilibrium in measuring chemical weathering rate of rocks |
Otros títulos : | Geochimica et Cosmochimica Acta |
Autor : | Moreira-Nordemann, Lycia Maria |
metadata.dc.creator: | Moreira-Nordemann, Lycia Maria |
Resumen : | The rate of chemical weathering of rocks has been determined by using uranium as a natural isotopic tracer. The concentration of uranium and 234U/238U ratio in natural waters, rocks, and soils of the Preto river basin (Bahia State, Brazil) was measured by alpha-ray spectroscopy. The activity ratio U234/U238 measured in the various samples indicates the uranium fraction which is dissolved from rocks during the weathering process. The results obtained show that 1 m of rock needs 25,000 yr to be weathered in this region under present climatic conditions. |
Editorial : | Geochimica et Cosmochimica Acta |
URI : | http://www.repositorio.ufba.br/ri/handle/ri/8684 |
Fecha de publicación : | 1980 |
Aparece en las colecciones: | Artigo Publicado em Periódico (FIS) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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1111aa.pdf | 1,02 MB | Adobe PDF | Visualizar/Abrir |
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