Isotope composition and concentration (δ2H, δ18O, 234U/238U, Ar, 40Ar/ 36Ar, 3He/4He and 20Ne/ 4He) were measured in the ground waters (Tomsk-7). Water has a distinct cold climate isotope signature δ2H = -127..-140, δ18O = -17.0.. -18.2 in contrast of modern meteoric water δ2H = -117, δ18O = -15.9. Stable isotopes are in concord with noble gas temperature tNGT = 0..+4 °C and helium model ages t = 7-14 ka. Disequilibrium uranium 234U/238U up to 16 (activity ratio) obtained and explained of 234U leaching by the melt water during the permafrost degradation.

Translated title of the contributionПроисхождение высоких отношений 234U/238U в водоносных горизонтах на участках развития мерзлоты в прошлом
Original languageEnglish
Title of host publicationUranium in the Environment
Subtitle of host publicationMining Impact and Consequences
EditorsBroder J. Merkel, Andrea Hasche-Berger
Place of PublicationBerlin, Heidelberg
PublisherSpringer Nature
Pages847-856
Number of pages10
ISBN (Electronic)978-3-540-28367-6
ISBN (Print)978-3-540-28363-8, 978-3-662-51793-2
DOIs
StatePublished - 1 Jan 2006
Event4th International conference on Uranium Mining and Hydrogeology, UMH 2005 - Freiberg, Germany
Duration: 1 Sep 20051 Sep 2005

Conference

Conference4th International conference on Uranium Mining and Hydrogeology, UMH 2005
Country/TerritoryGermany
CityFreiberg
Period1/09/051/09/05

    Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

ID: 4629567