Lower Cretaceous (Albian) to Tertiary strata, Yukon Territory - Northwest Territories (a contribution to the Geological Atlas of the Northern Canadian Mainland Sedimentary Basin)
Bibliographic record
Abstract
The state of knowledge concerning Albian to Tertiary geology of northwest Canada is best described as at an advanced reconnaissance level, with local areas where greater detail is known. However, the basic stratigraphic-structural framework is reasonably well known, allowing us to present a well-founded geological history of the area. Although Albian to Tertiary strata cover a large area of the western mainland of Northwest Territories and the northern Yukon (Fig. 1), their thickness is not great, except in the foldbelt of the northern Yukon. The wide extent of these strata was the result of a major, craton-wide transgression in the Late Aptian-Early Albian, which linked the boreal and southern seas into a large interior seaway covering much of western North America. In western Canada, this transgressive event is recognized as the beginning of Mannville deposition, and in northeast British Columbia/southeast Yukon as the beginning of deposition of the Fort St. John Group. In northwestern mainland Canada, the equivalent event is seen as a major cratonward overlap of older Cretaceous sediments, such that Upper Aptian-Lower Albian strata overlap Lower Aptian strata and rest directly on Paleozoic beds. Although at present there is no continuous outcrop of Albian strata between the northern mainland and northeast British Columbia/northern Alberta, the commonality of facies trends, and floras and faunas indicate that there was once a laterally continuous succession. Albian to Tertiary strata record the infill of the foreland basins adjacent to the Cordilleran orogen and the progressive shift of sedimentation to the continental margins. During the latter phase of sedimentation a few interior basins remained on the continental areas.
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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 | 0.005 |
| 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) | 0.008 | 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".