Diagenetic remagnetization in Bowser Basin: implications for timing and tectonics
Bibliographic record
Abstract
Paleomagnetic study of 46 sites in Bowser Basin in central British Columbia, Canada, gives evidence of a pervasive late tectonic hydrothermal event which remagnetized all rock types. Around Oweegee Dome (56.7ºN, 129.5ºW), samples from Permian through Jurassic strata hold a paleomagnetic component, which postdates most tilting (negative tilt test). The westerly direction (Dec=285.5º, Inc=60.8º, k=40.0, α95=4.2º, N=30 sites) is interpreted to have been acquired during Cretaceous or earliest Cenozoic time after the main stage of Skeena Fold Belt deformation in the western part of the foldbelt. The direction is anomalously shallow and counter-clockwise rotated, due to Late Cretaceous and later lateral displacements, rotations and tilting. The diagenetic event revealed by this study, its timing and its implications on subsequent tectonic motions contribute to the understanding of Bowser Basin development in support of petroleum assessment. RÉSUMÉ L’étude paéléomagnétique de 46 sites situés dans le Bassin de Bowser, au centre de la Colombie Britannique, Canada, indique l’évidence d’un événement hydrothermal tectonique tardif omniprésent qui a re-magnétisé tous les types de roches. Autour du Dôme de Oweegee (56.7°N, 129.5°W), des échantillons provenant du Permien, à travers les strates du Jurassique, renferment un composant paéléomagnétique postdatant la plupart des basculements (test négatif de
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.003 |
| 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) | 0.003 | 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".