Tectono-Metamorphic Evolution of the Snowcap Assemblage, Yukon-Tanana Terrane, West-Central Yukon
Bibliographic record
Abstract
Quantitative and qualitative analyses of Snowcap Assemblage metapelitic rocks of the Yukon-Tanana terrane (YTT) in west-central Yukon results in the identification of three phases of metamorphism and deformation through garnet crystallization modeling coupled with garnet age dating. A first Permo-Triassic metamorphic event (ca. 245 Ma), associated with a heating event occurring during the emplacement of Permian granitoids, reached low P amphibolite facies metamorphic conditions. The second metamorphic event dated at the Jurassic (ca. 197-188 Ma) reached peak P-T conditions of 7 kbar and 650-685 °C with a heating rate of 20 °C/My and is followed by a dwell period at T > 600 °C. This event follows typical Barrovian-type metamorphism and is interpreted to be associated with the accretion of the YTT onto Laurentia. The third metamorphic event, post-Jurassic in age, reached peak P-T conditions of 6 kbar and 580 °C with a heating rate of 20 °C/My.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.005 | 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 teacher head, 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".