UNDERGROUND PRODUCTION OF RADIONUCLIDES IN THE MILK RIVER AQUIFER, ALBERTA, CANADA

被引：31

作者：

ANDREWS, JN

FLORKOWSKI, T

LEHMANN, BE

LOOSLI, HH

机构：

[1] School of Chemistry, University of Bath, Bath

[2] Institute of Physics and Nuclear Techniques, Krakow

[3] Institute of Physics, University of Bern, Bern

来源：

APPLIED GEOCHEMISTRY | 1991年 / 6卷 / 04期

关键词：

D O I：

10.1016/0883-2927(91)90042-N

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Most cosmogenic radionuclides that may be used to estimate groundwater ages in excess of 100 ka are also produced underground by in situ nuclear reactions. Radioactive equilibrium between in situ production and decay would be approached within such long residence times. Radionuclide production by in situ nuclear reactions within the groundwater and within its host rock has been calculated theoretically and compared with some measured radionuclide contents of the groundwater. The fractional transfer of in situ produced Ar-37, Ar-39 and Rn-222 from rock to groundwater necessary to account for the total measured groundwater contents were found to be similar, although site specific. The implications for radionuclide release mechanisms and for groundwater dating by the use of cosmogenic radionuclides, including those which are applicable for very old groundwaters (Cl-36, Kr-81, I-129), are discussed.

引用

页码：425 / 434

页数：10

共 42 条

[1]

Andrews, Balderer, Bath, Clausen, Evans, Florkowski, Goldbrunner, Ivanovich, Loosli, Zojer, Environmental isotope studies in two aquifer systems, Isotope Hydrology 1983, pp. 535-576, (1984)

[2]

Andrews, Davis, Fabryka-Martin, Fontes, Lehmann, Loosli, Michelot, Moser, Smith, Wolf, Thein situ production of radioisotopes in rock matrices with particular reference to the Stripa granite, Geochim. Cosmochim. Acta, 53, pp. 1803-1815, (1989)

[3]

Andrews, Fontes, Michelot, Elmore, In situ<sup>36</sup>Cl production and groundwater evolution in crystalline rocks at Stripa, Sweden, Earth Planet. Sci. Lett., 77, pp. 49-58, (1986)

[4]

Andrews, Kay, Natural production of tritium in permeable rocks, Nature, 298, pp. 361-363, (1982)

[5]

Andrews, Wood, Mechanisms of radon release in rock matrices and entry into groundwaters, Trans. Inst. Min. Metall., 81, pp. B198-B210, (1972)

[6]

Barwick, Price, Ravn, Hourani, Hussonois, Systematics of spontaneous emission of intermediate mass fragments from heavy nuclei, Phys. Rev., 34 C, pp. 362-365, (1986)

[7]

Bentley, Phillips, Davis, Chlorine-36 in the terrestrial environment, Handbook of Environmental Isotope Geochemistry,Vol. 2, The Terrestrial Environment, pp. 427-480, (1986)

[8]

Charalambus, Nuclear transmutation by negative stopped muons and the activity induced by cosmic-ray muons, Nucl. Phys., 166 A, pp. 145-161, (1971)

[9]

Czubek, SLOWN2.BAS—programme for calculation of the rock neutron slowing down parameters, Rept. No. 1397/AP, (1988)

[10]

Fabryka-Martin, Bentley, Elmore, Airey, Natural Iodine-129 as an environmental tracer, Geochim. Cosmochim. Acta, 49, pp. 337-347, (1985)

← 1 2 3 4 5 →