A Geochemical and Isotopic Study of Crystalline Rock at Chalk River, Ontario, Canada
Bibliographic record
Abstract
Crystalline rock is one of several proposed long term storage sites for accumulated nuclear waste. The primary concern during long residence times (>100 Ka) is the transportation of hazardous materials by groundwater migration. The main pathways for fluid flow and material transport in crystalline rock tend to be porosity due to fractures caused by the tectonic stresses after initial deposition. Investigation and understanding of existing fractures and the precipitated minerals within them offer powerful tools to understand and predict the future stability of a site. Several methods were utilized to assist in investigating the hydrogeological history of the crystalline bedrock below the Chalk River site. These were chiefly focused on the fracture mineral, chemistry, and isotopes and their relationship to associated groundwaters. Multiple generations were identified within the fracture filling minerals themselves consisting primarily of calcite precipitated from several fluids under variable hydraulic conditions. The overall objective of this investigation was to identify if evidence exists for recent low temperature mineral formation, none of which were found despite a varied depositional history.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".