Ice-movement history, drift prospecting, and marine incursion in the Darby Lake and Arrowsmith River map areas, southern Boothia Peninsula, Nunavut
Bibliographic record
Abstract
Study of ice-movement indicators in the Darby Lake (NTS 56 N) and Arrowsmith River (NTS 56-O/9-16) map areas revealed a complex ice-flow history involving four phases. The oldest phase was north-northeastward to northeastward, and likely reflects ice flow during the last glacial maximum. This was followed by divergent flow, where ice in the western 56 N map area flowed north-northwest, and ice in the central to eastern 56 N, and in 56-O (north) map areas, flowed north-northeast. The third phase involved a shift of Darby Lake and western Arrowsmith River ice-flow directions to north-northeast and to the northeast in eastern 56-O (north). The final phase was a late-stage advance into 56 N /1 and 2. As part of a reconnaissance-scale drift-prospecting program, 92 till samples were collected and analyzed for heavy-mineral content, texture, carbonate content, pebble lithology, and trace/major elements. The study area was subjected to significant marine incursion, particularly in the major river valleys where marine sediments were found at elevations ranging between 92 m to 223 m a.s.l.
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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 | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| 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".