Revisiting the Ruby Terrane: Insights from Geologic Mapping in the Moran Area, Central-Interior Alaska
Bibliographic record
Abstract
logic mapping in the Moran Dome area of Central-Interior Alaska. The Moran project map area is located 150 miles west of Fairbanks, in the eastern Kokrines Hills, immediately north of the Yukon River, which follows the Kaltag, re-gional-scale, right-lateral, strike-slip fault system. DGGS geologists have distinguished eight mappable units, two re-gional metamorphic events, at least four ductile deformation events, and a single intrusive event followed by brittle de-formation; at least three metallogenetic events overlap the area. The Proterozoic to Paleozoic Ruby Terrane (RT) underlies most of the Moran area. DGGS subdivides the RT into five meta-sedimentary units, which spatially correspond with interpretations of the DGGS Moran airborne geophysical da-ta. From structurally lowest to highest they are paragneiss and pelitic schist, calcareous-mica-albite-quartz schist, massive to foliated graphitic quartzite, pelitic schist and metagrit, and an interlayered graphitic quartz schist and quartzite unit. Detrital zircon U/Pb ages in three samples of the RT are predominantly Paleozoic with a minimum inter-preted age of middle Triassic. In contrast, a fourth sample from the pelitic schist-metagrit unit is characterized by abun-dant Paleoproterozoic detrital zircons, similar to samples from the Wickersham grit and the Yukon-Tanana terrane. Shallow-dipping S2 foliation is axial planar to recumbent F2 isoclinal folds, and refolded by upright, open-to-close-profile NE- and SW-plunging F3 folds and lesser upright, open-to-close-profile NW- and SE-plunging F4 folds. Stretch-ing lineations plunge shallowly to the NW and SE. A Kaltag-parallel, steep, E–W-trending, S3 foliation cuts S2 along the
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".