Calcimicrobes, Microbial Fabrics, and Algae in Mississippian Midale Beds, Midale and Glen Ewen Pools, Williston Basin, Southeastern Saskatchewan
Bibliographic record
Abstract
The Midale Beds of the Mississippian Charles Formation were deposited in a shallow-water, periodically restricted, epeiric setting in southeastern Saskatchewan, and are characterized by a variety of shallow-water carbonate lithologies ranging from wackestone, to packstone, to grainstone with abundant calcimicrobes, algae, and related microbial fabrics. More than 300 thin sections from 35 wells that cored through Mississippian Midale Beds in the Glen Ewen and Midale pools of southeastern Saskatchewan were examined in order to study the contribution of calcimicrobes and algae to the sedimentation of Mississippian carbonate rocks. The calcimicrobes identified are mostly porostromate calcimicrobes and Garwoodia sp., Ortonella sp., as well as Archaeolithoporella-like, Girvanella-like, Wetheredella-like, and other forms of problematic calcimicrobes. The algae are mostly Zidella maxima, Archaeolithophyllum sp., phylloid algae, and a problematic algal group. Microbial fabrics are characterized by micro-stromatolites, microbial laminations, thrombolite, and clotted peloids and fenestrae. The fragmented algae commonly occur as bioclastic grains in the packstone and grainstone, whereas calcimicrobes and microbial fabrics are important components in the grainstones and microbial boundstone, and may be related to change of sea level, nutrient supply, and biotic assemblages.
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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 | 0.001 |
| 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".