Depositional Environment and Provenance of the Dina Formation, Provost Oil Field, East Central Alberta, and a Hydrocarbon Distribution Within
Bibliographic record
Abstract
The Dina formation, late Barremian to late Aptian, is the basal unit of the Mannville Group in east central Alberta, and the primary oil producing unit of the Provost oil field. In Section 23, Township 36 6W4 (part of the Belshill Lake paleo channel), well logs from two wells suggest the Dina formation is ~21 m thick. Physical and biogenic sedimentary structures preserved in cores from these two wells indicate the upper ~14 metres of the Dina formation were deposited in an estuarine environment, and lithofacies show an upwards increase in marine influence, grading upwards from marine influenced channel deposits on the bottom (of the cored interval) to moderately burrowed tidal flat (and channel) deposits on top. Oil stained sandstone beds in the two cores indicate oil distribution in the Dina formation is lithofacies dependent, and concentrated within channel sands of the upper lithofacies. The presence of accessory zircon, muscovite, and feldspar grains suggest a Canadian Shield provenance for the Dina formation. Pages: 130 Supervisor: Grant Wach
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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 | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 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".