Field and laboratory measurements of magnetic properties and density, Central Metasedimentary Belt, Ontario
Bibliographic record
Abstract
In situ magnetic susceptibility (K) and coincident ground magnetometer readings were measured at 26 locations within the Grenville Province near Bobcaygeon, Ontario. Hand samples were also collected for laboratory measurements of K, Königsberger ratio (Q) and density (ñ). Laboratory K measurements tended to be slightly greater than in situ measurements and are regarded here as more reliable; in situ measurements, however, provide useful information about the spatial distribution of K and its relationship to magnetic anomalies at various scales.Mafic gneisses yielded the highest average K (0.0125 SI) and ñ (2.914 Mg/m3). Ordovician limestones yielded the lowest K (1.05 x 10-6 SI), but a surprisingly high average ñ (2.839 Mg/m3). There is a good correlation of K and ñ with regional-scale anomalies, but at the outcrop scale the correlation of K with magnetic anomalies is not as clear.
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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 | 0.002 | 0.001 |
| 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".