Stable and radiogenic isotopic signatures of mineralized Devonian carbonate rocks of the northern Rocky Mountains and the Western Canada Sedimentary Basin
Bibliographic record
Abstract
Mineralized and non-mineralized coarse-crystalline dolomite (CCD) and saddle dolomite (SD) in Devonian carbonate rocks of the northern Rocky Mountains and the Western Canada Sedimentary Basin are compared in terms of fluid inclusion microthermometry and stable and radiogenic isotopic characterization. Samples from the Western Canada Sedimentary Basin are divided into four areas: eastern Presqu'ile barrier, western Presqu'ile barrier, McDonald-Hay River Fault system, and the Peace River Arch. Isotopic trends point to easterly formation-fluid flow paths from the Rocky Mountains to the western continental platform, and a key role for the northeast-trending structures in the circulation and focusing of hydrothermal and mineralizing fluids. Two distinct lead isotopic populations exist in sulphides from the carbonate-hosted Zn-Pb occurrences of the northern Canadian Rocky Mountains, Mackenzie Mountains, and Western Canada Sedimentary Basin, suggesting that two separate fluid sources/pathways existed in the Western Canada Sedimentary 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 | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| 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".