Neoproterozoic-hosted Carlin-type mineralization in central Yukon, part 1: regional- to prospect-scale geological controls
Bibliographic record
Abstract
In central Yukon, sediment-hosted gold mineralized zones have similar characteristics to Carlin-type deposits in Nevada. However, it remains unclear if exploration models applied to the southwest United States similarly apply to the Canadian Cordillera. This contribution tackles that knowledge gap by reviewing the regional- to prospect-scale setting of mineralized zones found in the Nadaleen trend, Yukon. Carlin-type gold-bearing zones in central Yukon are located near the boundary between the Ogilvie platform to the northeast and the Selwyn Basin to the southwest. This shelf-to-basin transition is marked in part by the Dawson fault, which is likely a long-lived, deep-seated structure that influenced sedimentation and younger structural history. Gold-mineralized zones are mainly hosted in two Neoproterozoic limestone units (informally known as the Conrad and Osiris limestones of the Nadaleen and Gametrail formations, respectively) and in Paleozoic siltstones. In the Nadaleen trend, the structural style is complex; the strata generally dip more steeply than in classic fold-and-thrust belts and faults bear a significant strike-slip component. Neoproterozoic-hosted gold ore zones are mostly concordant with bedding in complexly shaped anticlines. Gold mineralization is significantly younger than the main intrusion-related gold mineralizing event in the northern Selwyn Basin.
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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 | 0.002 |
| 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) | 0.001 | 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".