Overview of the Tertiary Cooling-uplift History of Northernmost Yukon Adjacent to the Beaufort Basin, Based on Apatite Fission Track Studies
Bibliographic record
Abstract
Summary The Tertiary Yukon Fold Complex is the onshore continuation of the arcuate Beaufort Foldbelt of the western Beaufort Basin (Lane and Dietrich, 1995). Offshore structures such as Adlartok in the Beaufort Foldbelt contain proven hydrocarbon reserves. The age progression of the Beaufort Foldbelt is constrained by biostratigraphy from wells penetrating the seismic sequences (e.g., Lane, 2004) and by seismically imaged unconformities (e.g., Dietrich et al., 1989). Onshore, deformed Paleocene outcrops together with examples of onshore-offshore structural continuity require that the adjacent onshore deformation has similar timing. However, the north Yukon Fold Complex extends southward as far as the Ogilvie Mountains where age constraints are more loosely defined (e.g., Dixon, 1992; Lane, 1998). This overview discusses the ages of uplift and cooling of the North Yukon Fold Complex based on published and unpublished apatite fission track (AFT) ages from across the region. Published AFT cooling ages document an early Eocene event coincident with the regionally dominant deformation offshore (O’Sullivan and Lane, 1997). Uplift magnitudes for the Yukon coastal plain determined from the apatite data are consistent with 5-7 km uplift estimates previously interpreted from well-based thermal maturity analyses (Majorowicz and Dietrich, 1989).
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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 | 0.000 | 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) | 0.003 | 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".