U-ages in soils and groundwater evidencing wet periods 400-600 kyr ago in southeast Brazil

Applied Radiation and Isotopes

Volumn 65, Issue 7, 2007, Pages 776-783

  Bonotto, D M ^a   Jimenez Rueda J R ^a  

^a SÃO PAULO STATE UNIVERSITY UNESP   (Brazil)

Author keywords

Groundwater; Guarani aquifer; Paran sedimentary basin; Soils; Uranium isotopes

Indexed keywords

AQUIFERS; DISSOLUTION; ISOTOPES; PRECIPITATION (CHEMICAL); RADIOACTIVITY; REDOX REACTIONS; ROCKS; URANIUM;

RESIDENCE TIME; SEDIMENTARY BASINS; URANIUM ISOTOPES;

SOILS;

GROUND WATER; URANIUM; URANIUM 234; URANIUM 238;

AQUIFER; ARTICLE; BRAZIL; DISSOLUTION; OXIDATION REDUCTION REACTION; PRECIPITATION; PRIORITY JOURNAL; ROCK; SEDIMENT; SOIL; SOIL ANALYSIS;

BRAZIL; GEOLOGIC SEDIMENTS; OXIDATION-REDUCTION; SOIL POLLUTANTS, RADIOACTIVE; URANIUM; WATER MOVEMENTS; WATER POLLUTANTS, RADIOACTIVE;

EID: 34248196051     PISSN: 09698043     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.apradiso.2007.03.001     Document Type: Article

References (27)

1. Allman M., and Lawrence D.L. Geological Laboratory Techniques (1981), Arco Publishing Co., New York
2. Almeida, F.F.M., Melo, M.S., 1981. A bacia do Paraná e o vulcanismo Mesozóico. In: IPT (Instituto de Pesquisas Tecnológicas do Estado de São Paulo) (Ed.), Mapa geológico do estado de São Paulo. vol. 1. Promocet, São Paulo, pp. 46-81.
3. 238U activity ratios for dissolved uranium and groundwater dating. USGS Open-File Rep. 78-101, pp. 11-13.
4. 238U activity ratios of dissolved uranium in groundwaters from a Jurassic limestone aquifer in England. Earth Planet. Sci. Lett. 57 (1982) 139-151
5. 238U activity ratios of dissolved uranium in groundwater from some Triassic sandstones in England. Isot. Geosci. 1 (1983) 101-117
6. Andrews J.N., Giles I.S., Kay R.L.F., Lee D.J., Osmond J.K., Cowart J.B., Fritz P., Barker J.F., and Gale J. Radioelements, radiogenic helium and age relationships for groundwaters from the granites at Stripa, Sweden. Geochim. Cosmochim. Acta 46 (1982) 1533-1543
7. Araújo, L.M., França, A.B., Potter, P.E., 1995. Giant Mercosul aquifer of Brazil, Argentina, Uruguay and Paraguay: hydrogeologic maps of Botucatu, Pirambóia, Rosário do Sul, Buena Vista, Misiones and Tacuarembó Formations. Technical Report, IX Encontro Nacional de Perfuradores de Poços, Universidade Federal do Paraná. Curitiba, Brasil, 16pp.
8. Bowie S.H.U., and Plant J.A. Natural radioactivity in the environment. In: Thornton I. (Ed). Applied Environmental Geochemistry (1983), Academic Press, London 481-494
9. Campos H.C.N.S. Mapa hidrogeológico do aqüífero Guarani. Acta Geol. Leopoldensia 23 4 (2000) 1-50
10. Cruz F.W., Burns S.J., Karmann I., Sharp W.D., Vuille M., Cardoso A.O., Ferrari J.A., Dias P.L.S., and Viana O. Insolation-driven changes in atmospheric circulation over the past 116,000 years in subtropical Brazil. Nature 434 (2005) 63-66
11. EPICA. Eight glacial cycles from an Antarctic ice core. Nature 429 (2004) 623-628
12. Federici P.R., and Pappalardo M. First finding of a terrace with preserved marine deposit along the coast of Eastern Liguria (Italy). Rend. Fis. Acc. Lincei 9 (2001) 69-82
13. Fritz P., and Fontes J.C. Handbook of Environmental Isotope Geochemistry (1980), Elsevier, Amsterdam
14. Fröhlich K., and Gellermann R. On the potential use of uranium isotopes for groundwater dating. Isot. Geosci. 65 (1987) 67-77
15. Gilboa Y., Mero F., and Mariano I.B. The Botucatu aquifer of South America, model of an untapped continental aquifer. J. Hydrol. 29 (1976) 165-179
16. Ivanovich M., and Harmon R.S. Uranium Series Disequilibrium: Applications to Environmental Problems (1982), Clarendon Press, Oxford
17. Ivanovich M., Fröhlich K., and Hendry M.J. Uranium-series radionuclides in fluids and solids, Milk River aquifer, Alberta, Canada. Appl. Geochem. 6 (1991) 405-418
18. 238U disequilibrium in nature. Science 173 (1971) 47-48
19. Langmuir D. Uranium solution-mineral equilibria at low temperatures with applications to sedimentary ore deposits. Geochim. Cosmochim. Acta 42 (1978) 547-569
20. Latham, A.G., Schwarcz, H.P., 1986. Models of uranium etching and leaching: their applicability to estimating rates of natural uranium removal from crystalline igneous rocks using U-series disequilibrium data from the Eye-Dashwa Lakes pluton. Canadian Atomic Energy, Rep. TR-353, 60pp.
21. Latham A.G., and Schwarcz H.P. On the possibility of determining rates of removal of uranium from crystalline igneous rocks using U-series disequilibria-1: a U-leach model, and its applicability to whole-rock data. Appl. Geochem. 2 (1987) 55-65
22. Osmond J.K., and Cowart J.B. The theory and uses of natural uranium isotopic variations in hydrology. Atom Energy Rev. 14 (1976) 621-679
23. Osmond J.K., Kaufman M.I., and Cowart J.B. Mixing volume calculations, sources and aging trends of Floridan aquifer water by uranium isotopic methods. Geochim. Cosmochim. Acta 38 (1974) 1083-1100
24. Rosholt J.N., Shields W.R., and Garner E.L. Isotope fractionation of uranium in sandstone. Science 139 (1963) 224-226
25. Silva, R.B.G., 1983. Estudo hidroquímico e isotópico das águas subterrâneas do aqüífero Botucatu no Estado de São Paulo. Ph.D. Thesis, USP-São Paulo University, São Paulo.
26. 238U in natural waters. Radiochim. Acta 21 (1974) 151-154
27. Wang X., Auler A.S., Edwards R.L., Cheng H., Cristalli P.S., Smart P.L., Richards D.A., and Shen C.C. Wet periods in northeastern Brazil over the past 210 kyr linked to distant climate anomalies. Nature 432 (2004) 740-743