The Application of Seismic Techniques in the Development of the Millennium Uranium Deposit, Northern Saskatchewan, Canada
Bibliographic record
Abstract
The Millennium uranium deposit is located within the Athabasca Basin of northern Saskatchewan, Canada. The deposit is situated within moderately dipping Paleoproterozoic supracrustal rocks unconformably overlain by greater than 500 m of porous Mesoproterozoic to Paleoproterozoic Athabasca Group sandstones. An unconformity, which is also a major fluid conduit, separates the basement lithologies from the overlying sandstone. Rock quality surrounding the deposit is compromised because of the effects of the significant hydrothermal alteration that has occurred syn- and postmineralization. Post-Athabasca structures, together with the unconformity, provide direct conduits for the migration of large amounts of basinal fluids to the general deposit area. To mitigate the risk involved with mining in such a complex hydrogeological environment several geotechnical surveys were proposed as part of a pre-feasibility study for potential mine development. Of these, seismic methods were identified as the best tool to potentially map the location of the unconformity, identify structurally complex zones and alteration at both the mine and property scales. Subsequently, comprehensive surface and borehole seismic programs were completed in an attempt to increase confidence in shaft sinking, delineate engineering hazards related to mine development, and provide information on the structural setting of the geology hosting the deposit. The program consisted of a surface 3D survey and multiple borehole seismic surveys. This was the first time a seismic program of this scale was undertaken for geotechnical studies prior to mine development in the Athabasca Basin. All surveys successfully mapped the unconformity and post-Athabasca structures at various scales.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.003 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 source (direct Gemma or distilled Codex), 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".