Preliminary results of linked in situ SHRIMP dating and thermobarometry of the Boothia mainland area, north-central Rae Province, Nunavut
Bibliographic record
Abstract
Preliminary thermobarometric and in situ U/Pb monazite data for metamorphic rocks in the Boothia mainland area reveal four metamorphic events. The northern granulite belt experienced 2602 ± 8 Ma monazite growth and S1 foliation development, but no ca. 1.8 Ga monazite growth. Partial breakdown of garnet and orthopyroxene to biotite is interpreted to be dated by 2417 ± 12 Ma monazite rims. Upper amphibolite-facies metasedimetary rocks of the Chantrey Group south of the granulite belt experienced S3-S4 deformation at 1826 ± 7 Ma, with matrix monazite crystallizing at 1805 ± 4 Ma. In the southwest (Barclay belt), monazite inclusions in syn-S4 garnet and andalusite indicate S4 deformation at 1789 ± 6 Ma. The 1826 to 1789 Ma metamorphism is associated with clockwise pressure-temperature-time (P-T-t) paths consequent to crustal thickening during the Hudsonian Orogeny.
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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) | 0.000 | 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".