Stratigraphy and detrital zircon U-Pb-Hf isotope provenance of the Faro Peak formation, \nCentral Yukon: implications for the Early Jurassic evolution of the Northern Canadian \nCordillera
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Bibliographic record
Abstract
Late Triassic to Early Jurassic plate convergence and crustal thickening along the Cordilleran \nmargin led to exhumation of the Intermontane terranes and subsequent deposition of multiple syntectonic \nstratigraphic assemblages in northwestern Canada. The Faro Peak formation is exposed \nin central Yukon along the Vangorda fault, the local suture between the Yukon-Tanana and Slide \nMountain terranes, and constrains the timing and spatial extent of Early Jurassic tectonic \nexhumation. The Faro Peak formation unconformably overlies Yukon-Tanana terrane basement \nrocks (Snowcap assemblage) and unnamed Triassic strata (formerly lower member of the Faro \nPeak formation) and consists of Sinemurian to Toarcian massive sandstone and pebble to boulder \nconglomerate units. Field stratigraphic and detrital zircon U-Pb-Hf isotope studies indicate that the \nFaro Peak formation was locally sourced from Late Triassic to Early Jurassic arc- to syn-collisional \nintrusive rocks and mid- to upper Paleozoic arc and marine sedimentary successions. Snowcap \nassemblage rocks were recycled into the overlying Faro Peak formation and mostly consist of \nquartz-mica schist and quartzite units with Cryogenian and older maximum depositional ages and \nPrecambrian detrital zircon grains that indicate northwestern Laurentian provenance. The Faro \nPeak formation was deposited in an isolated, structural basin by sediment gravity flows along the \nproto-Vangorda fault and separated from coeval, syn-tectonic deposition in the Whitehorse trough \nof southern Yukon by a regional drainage divide.
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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 | 0.002 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.002 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it