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https://repositorio.ufba.br/handle/ri/9943| metadata.dc.type: | Artigo de Periódico |
| Title: | Thallium in deep-seated crustal rocks |
| Other Titles: | Geochimica et Cosmochimica Acta |
| Authors: | Sighinolfi, G.Paolo Santos, Adelaide M. |
| metadata.dc.creator: | Sighinolfi, G.Paolo Santos, Adelaide M. |
| Abstract: | A Precambrian granulite terrain of the Brazilian shield presents an average Tl content of 350 ppb, very near to Shaw’s figure for the lower continental crust. Thallium, &8 in other rock types, shows close coherence with Rb and K. The mean Rb/Tl value (193 for 53 samples) falls in the range of the ‘normal’ crustal values, while the K/T1 values (145,000 average) are higher than values for igneous rocks, aa are the values for K/Rb. The results support the authors’ hypothesis that granulitic rocks have undergone partial melting with contemporaneous depletion of Rb and Tl in relation to K. |
| Publisher: | Geochimica et Cosmochimica Acta |
| URI: | http://www.repositorio.ufba.br/ri/handle/ri/9943 |
| Issue Date: | 1974 |
| Appears in Collections: | Artigo Publicado em Periódico (IGEO) |
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