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A Preliminary Stable Isotope Study on a Potential Radioactive Waste Repository Site in the Mecsek Mountains, Southern Hungary
Author(s) -
Demény Attila,
Fórizs István,
Máthé Zoltán
Publication year - 1996
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/(sici)1097-0231(199608)10:11<1415::aid-rcm679>3.0.co;2-d
Subject(s) - meteoric water , geology , geochemistry , calcite , carbonate , δ18o , groundwater , uranium , precipitation , stable isotope ratio , isotope , isotopes of strontium , pleistocene , chemistry , strontium , paleontology , geography , physics , materials science , geotechnical engineering , organic chemistry , quantum mechanics , meteorology , metallurgy
A potential repository site for high‐activity radioactive waste is investigated in the vicinity of a former uranium mine in the Mecsek Mts. (S. Hungary). In order to evaluate the usefulness of the site, stable H, C and O isotope compositions of shallow groundwaters, repository site waters, carbonate veins and fluid inclusions of the veins have been measured. Shallow groundwaters have H and O isotope compositions identical to those of the present day local precipitation water, whereas repository site waters show δD and δ 18 O values characteristic of Pleistocene meteoric waters. Based on δ 13 C, δ 18 O and δD (inclusion fluid) data, the calcite veins might have been formed by movements of meteoric water originating from precipitation in a warmer climate of the geological past. The results indicate that no significant infiltration of surface waters to the investigated repository site occurs, but signs of migration of Pleistocene waters along the veins has been observed.