SHRIMP U-Pb ages of multiple metamorphic events in the Angikuni Lake area, western Chruchill Province, Nunavut; Radiogenic Age and Isotopic Studies: Report 15
Bibliographic record
Abstract
Paragneiss near Angikuni Lake, Nunavut contains large, low-CaO garnet porphyroblasts(type I), enveloped by gneissic layering, and post-tectonic, thin garnet rims and microporphyroblasts withmuch higher CaO (type II). Calculated pressure-temperature conditions are approximately 5.4 kbar and730°C for type I garnet, and 11 kbar and 740°C for type II garnet. In situ sensitive high-resolution ion microprobe (SHRIMP) measurements yielded two age populations of monazite, 2.54 " 0.02 Ga and 1.93 " 0.05Ga, that are interpreted to date the two types of garnet growth. The new data indicate that a domain of2.56.2.5 Ga high-grade metamorphism and associated deformation extends approximately 400 km fromChesterfield Inlet at least as far southwest as the Angikuni Lake area.
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 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) | 0.001 | 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 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".