Context of the Deilmann orebody, Key Lake mine, Saskatchewan
Bibliographic record
Abstract
The Deilmann orebody was formed at the intersection of the unconformity underlying Athabasca Group and an east-northeast-trending anastomosing zone of deformation centred on graphite-bearing metasedimentary rocks of the Daly Lake Group. Four ductile to brittle-ductile deformational events predated deposition of the Athabasca Group, whereas two brittle deformational events occurred during and after deposition. Alteration and mineralization were intimately related to D5 faults, the most prominent of which is the Key Lake Fault. These formed by the brittle reactivation of older (predating Athabasca Group) fault structures. In a paleovalley on the unconformity surface underlying the Athabasca Group, the basal Athabasca Group sandstone onlaps the erosion surface, indicating early valley-fill deposition. Overlying strata are characterized by horizontal, laterally continuous (sheet-like) bedding. The location and pattern of mineralization suggests that this feature, in part, affected fluid flow. Near-infrared reflectance spectrometry analyses on samples from the Deilmann pit allowed identification of a number of alteration patterns revealing a clear relationship with faults postdating the Athabasca Group. The relative abundance of these different alteration signatures is a useful exploration tool.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 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".