Transpressive uplift and exhumation of continental lower crust revealed by synkinematic monazite reactions
Bibliographic record
Abstract
The Athabasca granulite terrane is exhumed continental lower crust (0.8 to >1.5 GPa ≈ 30 to >50 km paleodepths) exposed north of Lake Athabasca, Canada (Fig. 1A; Mahan et al., 2008).The terrane is composed of Archean to Paleoproterozoic mafi c and felsic granulites, orthogneisses, paragneisses, and minor eclogite bounded on its eastern margin by the 1.85 Ga Legs Lake shear zone (Fig. 1B; Mahan and Williams, 2005).Two main groups of structures have been identifi ed throughout the terrane.The fi rst group (D 1 ) includes subhorizontal to NW-striking, moderately dipping gneissic fabrics (S 1 ), ESE-trending stretching lineations, and recumbent isoclinal folds (F 1 ; Martel et al., 2008;Ashton et al., 2009;Dumond et al., 2010).These composite structures are interpreted as the result of granulite-grade lower-crustal fl ow at 2.60-2.55Ga, defi ning a protracted episode of lower-crustal weakness (Dumond et al., 2010).Group two structures (D 2 ) include several generations of upright, open to tight folds of S 1 and transposition of folds and gneissic fabrics into subvertical to steeply dipping NE-striking mylonitic Transpressive uplift and exhumation of continental lower crust revealed by synkinematic monazite reactions
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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 | 0.000 | 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) | 0.001 | 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".