Contact zones and hydrothermal systems as analogues to repository conditions

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doi: 10.1016/0009-2541(86)90035-5
Authors:Wollenberg, H. A.; Flexser, S.
Author Affiliations:Primary:
Lawrence Berkeley Lab., Earth Sci. Div., Berkeley, CA, United States
Other:
Swed. Geol. Co., Sweden
Volume Title:Natural analogues to the conditions around a final repository for high-level radioactive waste
Volume Authors:Chapman, Neil A., editor; Smellie, John A. T.
Source:Chemical Geology, 55(3-4), p.345-359; Workshop on natural analogues to the conditions around a final repository for high-level radioactive waste, Lake Geneva, WI, Oct. 1-3, 1984, edited by Neil A. Chapman and John A. T. Smellie. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0009-2541
Publication Date:1986
Note:In English. 13 refs.; illus. incl. 1 table, sect., geol. sketch maps
Summary:Radioactive waste isolation efforts in the USA are currently focused on examining basalt, tuff, salt and crystalline rock as candidate rock types to encompass waste repositories. Distributions of radio- and trace-elements were examined across contacts between these rocks and dykes and stocks that have intruded them. Investigations of intrusive contact zones included: 1) a Tertiary stock into Precambrian gneiss; 2) a stock into ash flow tuff; 3) a rhyodacite dyke into Columbia River basalt; and 4) a kimberlite dyke into salt. The results indicate that there has been no appreciable migration of radio-elements from the more radioactive intrusives into the less radioactive country rocks, either in response to the intrusions or in fracture-controlled hydrological systems that developed after emplacement. In many cases, the radio-elements are locked up in accessory minerals, suggesting that artificial analogues to these would make ideal waste repositories.
Subjects:Actinides; Analog simulation; Aureoles; Cenozoic; Columbia River Basalt Group; Engineering geology; Geochemistry; Ground water; High-level waste; Intrusions; Isotopes; Metals; Migration of elements; Minerals; Miocene; Neogene; Processes; Radioactive isotopes; Radioactive waste; Surveys; Tertiary; Uranium; Waste disposal; Colorado; Europe; Scandinavia; Sweden; United States; Washington; Western Europe; Stripa quartz monzonite
Record ID:1986082003
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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