The geology, hydrogeology and geochemistry of the Needle's Eye natural analogue site
The British Geological Survey has been carrying out a research investigation of the Needle's Eye site on the Solway coast in south-western Scotland. This study of a naturally radioactive geochemical system aims to improve confidence in the use of predictive models of radionuclide migration in the geosphere. Results from the integrated use of hydrogeological, mineralogical and geochemical techniques, applied to the study of the transport and distribution of uranium, are presented. Pitchblende veins exposed in the cliffs are a major source of soluble uranium in groundwaters flowing into organic-rich post-glacial flood plain and intertidal mudflat deposits. Organic matter, both living and dead, has played a key role in the retardation of uranium in these sediments. Chemical transport modelling of the uranium dispersion/retardation is described, and the implications for performance assessment work are discussed.
Bibliographic Reference: EUR 13434 EN (1991) 30 pp., FS, ECU 5
ISBN: ISBN 92-826-2559-1
Record Number: 199110987 / Last updated on: 1994-12-02
Original language: en
Available languages: en