Archean and Paleoproterozoic fault history of the Big Lake shear zone, MacQuoid-Gibson lakes area, Nunavut
Bibliographic record
Abstract
The Big lake shear zone in the MacQuoid Gibson lakes area comprises diverse mylonitic rocks with a complex tectonothermal history. The shear zone has an exposed strike length of 50 km, with abrupt termination to the west. Central and eastern segments of the shear zone consist of dextral, amphibolite-facies, porphyroclastic mylonite and annealed straight gneiss. The western segment, however, is cored by variably retrogressed granulite-facies mafic and anorthositic ultramylonite, within amphibolite-facies wall rocks, and has a more complex kinematic history. The granulite-facies rocks are spatially associated with the anorthosite sheets, which are interpreted here as the dominant heat source of the localized high-grade event. The ultramylonite units are crosscut by undeformed ca. 2.19 Ga MacQuoid dykes, constraining the high-grade, high-strain event to be older. Regional aeromagnetic data illustrate that the western segment is truncated by two faults of (?)Proterozoic age.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 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) | 0.008 | 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 teacher head, 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".