Paleozoic tectonostratigraphy of the northern Stevenson Ridge area, Yukon
Bibliographic record
Abstract
The northern Stevenson Ridge map area is underlain by Paleozoic to Paleogene rocks that locally host Au and Cu-Au mineralization. The northern side of the Dawson Range is characterized by Paleozoic rocks typical of the Yukon-Tanana terrane, including the pre-Devonian Snowcap assemblage, Mississippian Simpson Range suite and Finlayson assemblage, and the Permian Klondike schist and Sulphur Creek plutonic suite of the Klondike assemblage. The Mississippian stratigraphy is intruded by the Triassic Pyroxene Mountain suite and the Early Jurassic Aishihik suite. Late Devonian metamorphosed volcanic, plutonic and sedimentary rocks of the White River assemblage and the Late Triassic Snag Creek gabbro suite occur southwest of the Dawson Range. These rocks are structurally overlain by a thrust sheet of the Early Permian ophiolitic Harzburgite Peak complex. The White River assemblage and the Yukon-Tanana terrane are juxtaposed along the post-Triassic Moose Creek fault, which is partly demarcated by lozenges of peridotite, indicating that it is a fundamental crustal fault. Other major post-Triassic faults imbricate the Yukon-Tanana terrane tectonostratigraphy, and determine the map pattern. These faults likely acted as conduits for Mesozoic fluids and magmatism and have been reactivated throughout the Cordilleran orogenesis. Late Cretaceous and younger faults throughout the area have only modest offsets.
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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 | 0.001 | 0.001 |
| 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) | 0.005 | 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 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".