71Report of Activities 2007 New field and geochronological results for the Osik–Atik–Footprint lakes area, Manitoba
Bibliographic record
Abstract
The oldest recognized units in the Osik–Atik– Footprint lakes are porphyritic granodiorite rocks iden-tified by sensitive high-resolution ion microprobe (SHRIMP) U-Pb zircon ages on plutons at Atik Lake (1879 ±13 Ma) and Footprint Lake (1882 ±10 Ma). A supracrustal sequence containing quartz-rich sandstone and silicate-facies iron formation that borders a similar pluton at Wapisu Lake may be unconformable and underlie Burntwood Group (<1850 Ma) migmatite rocks, which make up most of the northeastern Kisseynew Domain. At Osik Lake, a hook-shaped body of homoge-neous biotite tonalite is enveloped by a sheath of ender-bite–quartz diorite–gabbro in structural contact with the Burntwood migmatite. The tonalite contains at least one layered mafic-ultramafic body that may be the source of a nickel-in-till anomaly south of Osik Lake. Structurally, the area is characterized by a set of upright, gently northeast-plunging F 3 folds that reoriented a prominent S 2 foliation developed in all rock types except late granite and pegmatite. The map pattern of an outlier of Sickle Group rocks north of Osik Lake may be the product of structural interference.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.003 | 0.003 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.017 | 0.003 |
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".