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• W2049619956 abstract "As part of the Geologic Waste Management Facility feasibility study, Atomic Energy of Canada Ltd. (AECL) is evaluating the suitability of the Chalk River Laboratories (CRL) site in Ontario, situated in crystalline rock of the southwestern Grenville Province, for the possible development of an underground repository for low- and intermediate-level nuclear waste. This paper presents petrographic and trace element analyses, U–Pb zircon dating results, and Rb–Sr, U–Pb and U-series isotopic analyses of gneissic drill core samples from the deep CRG-series characterization boreholes at the CRL site. The main rock types intersected in the boreholes include hornblende–biotite (±pyroxene) gneisses of granitic to granodioritic composition, leucocratic granitic gneisses with sparse mafic minerals, and garnet-bearing gneisses with variable amounts of biotite and/or hornblende. The trace element data for whole-rock samples plot in the fields of within-plate, syn-collision, and volcanic arc-type granites in discrimination diagrams used for the tectonic interpretation of granitic rocks. Zircons separated from biotite gneiss and metagranite samples yielded SHRIMP-RG U–Pb ages of 1472 ± 14 (2σ) and 1045 ± 6 Ma, respectively, in very good agreement with widespread Early Mesoproterozoic plutonic ages and Ottawan orogeny ages in the Central Gneiss Belt. The Rb–Sr, U–Pb, and Pb–Pb whole-rock errorchron apparent ages of most of the CRL gneiss samples are consistent with zircon U–Pb age and do not indicate substantial large-scale preferential element mobility during superimposed metamorphic and water/rock interaction processes. This may confirm the integrity of the rock mass, which is a positive attribute for a potential nuclear waste repository. Most 234U/238U activity ratios (AR) in whole rock samples are within errors of the secular equilibrium value of one, indicating that the rocks have not experienced any appreciable U loss or gain within the past 1 Ma. However, 234U/238U AR in fracture mineral samples collected down to borehole lengths of about 740 m deviate from the secular equilibrium value and 234U/238U model ages calculated for fracture mineral samples showing excess 234U range from 593 to 1415 ka, thus providing evidence of fracture flow in the associated bedrock during the past 1.5 Ma. Rare earth element patterns are variable in fracture-filling calcites and Fe oxides/hydroxides but are similar to those observed in associated whole-rock samples. The observed Ce anomalies are very small (CeN/CeN∗≈1), do not vary with depth, and, therefore, do not contain evidence that the studied fracture minerals precipitated from oxidizing waters at the conceptual depth of a repository." @default.
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• W2049619956 date "2013-09-01" @default.
• W2049619956 modified "2023-09-27" @default.
• W2049619956 title "U–Pb, Rb–Sr, and U-series isotope geochemistry of rocks and fracture minerals from the Chalk River Laboratories site, Grenville Province, Ontario, Canada" @default.
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• W2049619956 cites W1965344518 @default.
• W2049619956 cites W1968827803 @default.
• W2049619956 cites W1973224702 @default.
• W2049619956 cites W1979098181 @default.
• W2049619956 cites W1985102170 @default.
• W2049619956 cites W1987852614 @default.
• W2049619956 cites W1988306017 @default.
• W2049619956 cites W1992790086 @default.
• W2049619956 cites W2003756222 @default.
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• W2049619956 cites W2005472189 @default.
• W2049619956 cites W2005894983 @default.
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• W2049619956 cites W2010747628 @default.
• W2049619956 cites W2011016972 @default.
• W2049619956 cites W2018170658 @default.
• W2049619956 cites W2019407001 @default.
• W2049619956 cites W2023863963 @default.
• W2049619956 cites W2025460335 @default.
• W2049619956 cites W2026387367 @default.
• W2049619956 cites W2027065363 @default.
• W2049619956 cites W2027209394 @default.
• W2049619956 cites W2034867601 @default.
• W2049619956 cites W2036174339 @default.
• W2049619956 cites W2036214865 @default.
• W2049619956 cites W2038638538 @default.
• W2049619956 cites W2039072996 @default.
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• W2049619956 cites W2059825311 @default.
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• W2049619956 cites W2084493034 @default.
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• W2049619956 cites W2100575321 @default.
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• W2049619956 doi "https://doi.org/10.1016/j.apgeochem.2013.06.004" @default.
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