Neoarchean evolution of the western-central Wabigoon boundary zone, Brightsand Forest Area, Ontario.
Bibliographic record
Abstract
The boundary between the western and central domains of the Wabigoon subprovince has been considered to represent a ca. 2.7 Ga suture between juvenile Neoarchean volcanic rocks in the west and granitoid rocks with Mesoarchean ancestry in the central Wabigoon. The nature and timing of interaction between these two terranes was examined southeast of the Sturgeon Lake greenstone belt within the central Wabigoon, where amphibolite-facies supracrustal remnants are dismembered by Neoarchean plutonic rocks and shear zones. Of the 4 preserved ductile deformation fabrics, D1 and D2 are bracketed by a 2718 +/- 7 Ma tonalite gneiss and crosscutting 2715 Ma tonalite dyke. The main penetrative S3 foliation affects most units, including quartz-rich sandstone deposited after 2701 Ma. A 2697 Ma granodiorite dyke cutting S3 in mafic and metasedimentary rocks provides a lower bracket on D3. Regional implications can be drawn from the observation of 2725--2715 Ma D1 and D2 deformation events in the central Wabigoon. These constraints overlap with an early deformation event in the Pipestone Lake area of the western Wabigoon (2727--2712 Ma; Edwards and Stauffer, 1999). (Abstract shortened by UMI.)
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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 | 0.002 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 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".