Emplacement of an Archean gneiss dome, northern Ontario, Canada: Inflation inferred from magnetic fabrics
Why this work is in the frame
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Bibliographic record
Abstract
Previous field structural studies of the Ash Bay gneiss dome revealed an upward convex foliation with an integral east‐west lineation defined by a quartzo‐felspathic matrix. Unfortunately, the amphibolite facies gneisses lack traditional indicators of microfabric evolution, such as kinematic indicators, so that it is difficult to relate the foliation's orientation distribution to an emplacement mechanism for the dome. Fortunately, anisotropy of magnetic susceptibility isolates a distinct microfabric because of the preferred orientation of high‐susceptibility, accessory magnetite. The magnetite subfabric developed late in the metamorphic crystallization history, and its magnetic foliation and magnetic lineation are similarly oriented to the S‐L fabric of the quartz‐feldspar matrix. However, the magnetite foliation dips less steeply and forms a less convex domal surface than the field schistosity. The metamorphic schistosity and the magnetite foliation thus isolate the domal deflection at different stages, confirming the inflation and upward motion of the Ash Bay diapir during the closing stages of amphibolite facies metamorphism.
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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 it