| Autor: |
Anjos RM; Instituto de Física, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, s/no, Gragoatá, 24210-346 Niterói, RJ, Brazil. meigikos@if.uff.br, Macario KD, Lima TA, Veiga R, Carvalho C, Fernandes PJ, Vezzone M, Bastos J |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of environmental radioactivity [J Environ Radioact] 2010 Jan; Vol. 101 (1), pp. 75-81. Date of Electronic Publication: 2009 Oct 01. |
| DOI: |
10.1016/j.jenvrad.2009.08.013 |
| Abstrakt: |
Natural gamma radiation measurements of sand deposits were carried out in order to study the chronology of prehistoric colonization of the Brazilian coast during the Holocene. The method employs thorium, uranium and potassium as tracers of the geological provenance of Quaternary deposits, where artificial shellmounds are found. The so-called sambaquis are archaeological settlements, characteristic of fisher-gatherers, specialized in the exploitation of shellfish. Our results show a considerable positive correlation between the formation of coastal deposits, based on cross plots of eTh/eU and eTh/K, and the antiquity of its prehistoric human occupation. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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