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metadata.dc.type: | Artigo de Periódico |
Title: | Use of 234U/238U disequilibrium in measuring chemical weathering rate of rocks |
Other Titles: | Geochimica et Cosmochimica Acta |
Authors: | Moreira-Nordemann, Lycia Maria |
metadata.dc.creator: | Moreira-Nordemann, Lycia Maria |
Abstract: | 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. |
Publisher: | Geochimica et Cosmochimica Acta |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/8684 |
Issue Date: | 1980 |
Appears in Collections: | Artigo Publicado em Periódico (FIS) |
Files in This Item:
File | Description | Size | Format | |
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1111aa.pdf | 1,02 MB | Adobe PDF | View/Open |
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