Kilometre-scale carbonate mounds in basinal strata: implications for base-metal mineralization in the Mesoproterozoic Arctic Bay and Society Cliffs formations, Borden Basin, Nunavut
Bibliographic record
Abstract
Huge dolostone buildups (>200 m thick, >4 km across) grew in deep water during uppermost Arctic Bay Formation shale deposition in the northwestern Milne Inlet Graben, Borden Basin (Mesoproterozoic).Mounds and coeval shale are temporally equivalent to the lower Society Cliffs Formation in the southeastern part of the graben. Mounds protrude through the Society Cliffs basinal carbonate laminite interval into the lower Victor Bay Formation shale, both of which accumulated around the relict topography of defunct mounds. Absence of stromatolitic fabric and an exclusively basinal location indicate that mounds are not normal Proterozoic photic-zone reefs; scattered distribution, lack of preference for particular substrate types or specific facies tracts, and mound elongation parallel to nearby syndepositional faults suggest that mounds grew around cold seeps. Mounds may serve as landmarks for areas of long-lived permeable faults through which early and late mineralizing fluids migrated. The geometry of buried mounds may also be critical to localizing later Nanisivik-style mineralization.
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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 | 0.001 |
| Science and technology studies | 0.002 | 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".