Architecture and stratigraphy of the Lower Silurian Guelph Formation, Lockport Group, southern Ontario and Michigan
Bibliographic record
Abstract
The Lower Silurian Lockport Group in Ontario and Michigan comprises, in ascending order: Gasport, Goat Island, Eramosa, and Guelph formations. Guelph facies architecture reveals deposition on an underlying carbonate ramp of Eramosa and/or Goat Island carbonates that dipped towards the Appalachian Basin. Temporally, Guelph facies reflect initial open marine transgressive phases that become increasingly restricted marine and karstic upward. Spatially, the facies display the most restricted marine and karstic fabrics in the central portion of the ‘Michigan Basin’ and are most open marine to the east. Newly acquired regional data supports the re-interpretation of the classic Guelph-pinnacle reef models as karst towers that formed in a paleokarst basin. This new regional perspective of the classic ‘Guelph-play’ will help to explain some of the challenges faced by oil/gas explorationists trying to both map/predict production zones and encourage re-evaluation of existing plays and enable successful exploration of new targets.
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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 | 0.003 | 0.003 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.010 | 0.001 |
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".