Stratigraphy and Sedimentology of the Late Cretaceous (Coniacian) Muskiki and Marshybank Members, Southern Alberta and Northwestern Montana
Bibliographic record
Abstract
A high-resolution allostratigraphic study of the Coniacian Muskiki and Marshybank members of the Wapiabi Formation in southern Alberta revealed a southwest thickening wedge of mudstone-dominated strata that was deposited on a shallow storm-dominated shelf. Well-log correlations and biostratigraphy show that the Muskiki Member forms the bulk of the succession; the Marshybank Member is thin or absent in the subsurface. The lower and middle units of the Muskiki Member display regional subsidence patterns consistent with thrust sheet loading in the Cordillera. The upper unit comprises a linear trough filled by southeastward-accreting clinothems. The northeast boundary of the clinoform package corresponds with an Archean thrust fault that may have undergone extensional reactivation during the Coniacian, forming a local trough. An isopach map of the basal Santonian strata shows thinning coincident with the Vulcan magnetic anomaly, suggesting differential subsidence across the structure.
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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 | 0.000 | 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".