40 crust-mantle evolution of the Western Superior Craton: implications for Archaean granite-greenstone petrogenesis and geodynamics
Bibliographic record
Abstract
New U-Pb, Lu-Hf and O isotopic measurements on Igneous-hosted zircons help unravel the crust-mantle evolution of the Superior Craton, Canada. Uniform isotope time arrays spaning 600 m.y., together with the physiochemical rock record, are reconciled by in-situ Paleoarchaean rifting, Neoarchaean basin closure by subduction and structural repetition during late transpression. The appearance of the sanukitoid suite during transpression reflects the confluence of stiff, thick lithosphere, compression, widespread sedimentation, transport of sedimentary materials to mantle depth and extensive differentiation of derived melts. Therefore, the global late Archaean tonalite-trondjemite-granodiorite to sanukitoid transition marks the establishment of uniformitarian crust formation processes on Earth.
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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 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".