40Ar/39Ar biotite, muscovite, and hornblende ages from the Cape Smith belt and Superior Craton, northern Quebec
Bibliographic record
Abstract
This Open File presents forty-nine new 40Ar/39Ar step-heating analyses of biotite, muscovite and hornblende from Paleoproterozoic strata of the Cape Smith belt and Archean orthogneiss of the Superior Craton in northern Quebec, Canada. Geological mapping and sample collection were conducted in the Cape Smith belt and surrounding Superior cratonic basement by the Geological Survey of Canada during 1985-1987 (mapping is summarized in St-Onge et al., 2007). In the portion of the Superior Craton located south of the Cape Smith belt, known as the Minto Block, geological mapping and sample collection were performed by the Geological Survey of Canada in 1961-1963 (Stevenson, 1968) and 1973 (Taylor, 1982). The 40Ar/39Ar thermochronological analyses presented here were carried out on thirty-two metaplutonic, metasedimentary and metavolcanic samples along a north-to-south transect across parautochthonous and allochthonous units and their bounding crustal structures in order to (i) delineate possible domains with different cooling histories and (ii) provide new insights into the post-collisional history of the Trans-Hudsonian orogenic front. Age determinations were conducted in 2004 at the Geological Survey of Canada Noble Gas Laboratory facility in Ottawa, Ontario, Canada.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.004 | 0.007 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.020 | 0.002 |
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".