Thermochronologic and Geophysical Investigations of Canadian Cordilleran Crust
Bibliographic record
Abstract
Lithospheric-scale geodynamic processes are interconnected with surface processes such as erosion and tectonic denudation, therefore the integration of geological and geophysical data is valuable when developing geodynamic models. One geodynamic problem that has gained worldwide interest is the contrast in lithospheric properties between the hot and thin Canadian Cordillera and cold and thick North American craton. This thesis focuses on characterizing two aspects of the crust in western Canada: 1) ancient surface and near-surface processes using low-temperature (U-Th)/He thermochronology; and 2) modern geothermal gradients using a wavelet analysis of magnetic anomalies. The first study resolves a differential, tectonically-driven Cretaceous exhumation history in the northern Canadian Cordillera. The second study finds that Curie depths (~580 °C) are shallow throughout the Cordillera, averaging ~15 km, compared to the Canadian Shield, averaging ~33 km. Both studies provide useful constraints for modeling the geodynamic evolution of the Canadian Cordillera.
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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 | 0.003 | 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) | 0.002 | 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".