Geological setting and mineralization styles of the Sunday Lake and Lower Detour 'gold trends', northwestern Abitibi Greenstone Belt, Ontario and Quebec
Bibliographic record
Abstract
The Detour Lake gold mine (approximately 25 Moz Au) and Lower Detour zones (e.g. Zone 58N; 534 000 oz Au) are in the northwestern part of the Abitibi greenstone belt in Ontario. They are spatially associated with the Sunday Lake and Lower Detour deformation zones that delineate gold trends extending eastward into Quebec, where gold mineralized zones, such as the Vortex and Martiniere - Bug Lake deposits, also occur. Gold is associated with quartz-carbonate±tourmaline veins and/or silicified zones and disseminated to locally semi-massive sulphides in veins or sericitized, chloritized, or biotitized wall rocks. These structurally controlled auriferous zones are hosted in volcanic sequences of the 2734 to 2724 Ma Deloro assemblage and in porphyritic rocks near faulted contacts with Porcupine-like turbidite of the less than 2.70 Ga Caopatina assemblage. Strained Timiskaming-like polygenic conglomerate locally delineates the regional-scale deformation zones. These relationships are analogous to parts of the southern Abitibi belt, such as in Timmins - Porcupine or Val d'Or areas. Geochemical and geochronological analyses are underway to document the lithotectonic setting and alteration associated with gold mineralization and to better constrain the timing of deformation, magmatism, sedimentation, and mineralization along the Sunday Lake and Lower Detour deformation zones.
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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 | 0.002 | 0.003 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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".