1 / 5

Two Kyt-projects:

Two Kyt-projects:. GeochemM: U-migration and retention in granitic rock U in Water-rock Interaction. Independents. Both at a regional scale with samples of several sites from Finland and Sweden Two different approaches:

Download Presentation

Two Kyt-projects:

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Two Kyt-projects: GeochemM: U-migration and retention in granitic rock U in Water-rock Interaction

  2. Independents • Both at a regional scale with samples of several sites from Finland and Sweden • Two different approaches: • GeochemM: U-mineralogy, migration paths characterization and dating of U-minerals • U in WRI: U-isotopes (U-234, U-238) and activity ratios (U-234/U-238) distribution in groundwaters

  3. Same conclusion • Glacial melt water intrusion deep in the bedrock Other investigations with a third approach: I.D. Clarck et al. 2000. GROUND WATER 38 no. 5,735-742 - Melt water injected into the subsurface (700 m depth) during ablation of the Laurentide Ice Sheet at ca. 10 ka under conditions of high hydraulic gradient (modelled and supported by studies of Björnson (Nature 395, 771-774).

  4. What so? • Site investigation studies refer to the same event (oxygen isotope values) • What is the fate of radionuclides (products, positon, migration rates, distances, and paths): • Need of mineralogical studies and characterization of possible migration paths

  5. Future prospects • Main report (TKK-series) with last findings and modelling approach • Publications to referee journals: • U-mineralogy (chemistry) and migration • U-mineral dating and connection to glacial cycles • Modelling approaches (reactive models for radionuclide migration in granitic rocks)

More Related