Mississippi Valley-type (MVT) Pb-Zn potential in Middle and Upper Devonian carbonate deposits of northeastern Alberta, and implications for future exploration based on diagenesis and isotope geochemistry
Bibliographic record
Abstract
Middle and Upper Devonian carbonate deposits in northeastern Alberta were investigated in outcrop and core for their Mississippi Valley-type (MVT) lead and zinc potential. A detailed petrographic study indicates that many, but not all, of the diagenetic products associated with the Pine Point - Presqu'ile Barrier deposits were found. Isotopic analysis of the rocks suggests the diagenetic fluid(s) responsible for dolomitization in the area was modified Devonian seawater. Stable isotope data from the Mikkwa Formation at Harper Creek, and the Methy Formation at Whitemud Falls, fall within, or are marginal to similar studies on the Pine Point - Presqu'ile Barrier deposits. 87Sr/86Sr values from the Mikkwa Formation at Harper Creek and Vermilion Chutes show some similarities to Pine Point dolomite data. Overall, the integrated data do not rule out the possibility of MVT Pb-Zn deposits in northeastern Alberta, but do not support exploration at the sites examined.
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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 | 0.001 | 0.000 |
| 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".