Structural evolution and orogenic gold metallogeny of the western Wabigoon subprovince, Canada
Bibliographic record
Abstract
Some of the world’s largest orogenic gold deposits are hosted within granite-greenstone \nsubprovinces of the Superior Province of Canada. The apparent gold endowment of the western \nWabigoon subprovince is much less than that of the Abitibi subprovince, despite both Neoarchean \nsubprovinces sharing similar structural and metallogenic histories. Further, the relationship \nbetween regional deformation and orogenic gold mineralizing events in the western Wabigoon \nsubprovince is poorly constrained in comparison to other greenstone belts within the Superior \nProvince. New structural mapping of the Dryden area of the western Wabigoon subprovince \nindicates that it experienced a N-S shortening event (D1), 2705-2695 Ma, which reactivated, or \ninitiated the formation of, the E-W-trending Wabigoon and Mosher Bay-Washeibemaga \ndeformation zones (Wdz and MBWdz, respectively). Following the D1 event, after 2695 Ma, a \nprotracted period of NNW-SSE shortening (D2) localized transpression along the Manitou \nDinorwic deformation zone (MDdz), which is spatially associated with orogenic gold systems, \nincluding the Goldlund deposit (~1.7 Moz Au) and Kenwest prospect (~0.3 Moz Au). During D2, \nthe MDdz experienced sinistral transpression, while the Wdz and MDdz experienced dextral-sense \nmovement. U-Pb geochronology of vein-hosted xenotime from the Goldlund deposit and Kenwest \n \nprospect indicate that hydrothermal events, and likely gold mineralization, occurred syn- to late- \nD2 deformation at 2664 ± 8.3 Ma and 2580 ± 12 Ma, respectively. The structural evolution and \n \norogenic metallogeny of the western Wabigoon subprovince is similar to that of anomalously gold- \nrich subprovinces of the Superior Province. Therefore, it is proposed that the structural evolution \n \nof individual greenstone belts is not the primary controlling factor on their bulk gold endowment. \nNevertheless, orogenic gold deposits are spatially associated with major deformation zones and \nlinked to widespread hydrothermal event(s), spanning 2680-2580 Ma across the southern Superior \nProvince.
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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 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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".