Precambrian geology, Victory and Mackenzie lakes, Nunavut and significance of 'Mackenzie Lake metasediments', Paleoproterozoic Hurwitz Group
Bibliographic record
Abstract
Siliciclastic remnants in the Victory-Mackenzie lakes area ('Mackenzie Lake metasediments') correlate with the lower Hurwitz Group (Paleoproterozoic; Noomut and Padlei formations; Maguse Member, Kinga Formation). Hurwitz strata and basement are tightly infolded about steeply dipping axial surfaces. However, northwest of Mackenzie Lake, screens of mafic volcanic and immature supracrustal rocks within leucogranite are likely Kaminak Group (Neoarchean), and display shallowly dipping folds, fabrics, and shear zones. The Mackenzie Victory lakes area may represent a suprastructure preserving the Hurwitz Group in basement-cover infolds; the northwestern area may represent an infrastructure with intrabasement high-strain zones. Deformation occurred before ca. 1.85 1.83 Ga (age of pristine lamprophyre dykes), and after ca. 2.45 Ga (age of foliated Kaminak dykes). Clasts in Hurwitz conglomerate lack internal tectonic fabrics despite penetratively deformed source rocks, hence the primary tectonic imprint was Paleoproterozoic. Base-metal prospects discovered by Comaplex Minerals Corp. in Kaminak Group volcanogenic strata display features characteristic of volcanic massive sulphide deposits.
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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 | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 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".