Modèles d'astroblèmes d'après le déplacement des masses rocheuses : Charlevoix et le Ries
Bibliographic record
Abstract
One can determine the movement of rock masses in the formation of an astrobleme by ascertaining the displacements of stratigraphic reference levels before and during the impact. A discontinuity in the zone of shock metamorphism in the Charlevoix (Quebec, Canada) structure corresponds with a major fault separating an irregularly uplifted crown area from a depressed inner zone. The displacement along this circular fault is inverse to the normal displacement of the layers of this structure, that is to say, a broad collapsed area of terraces and grabens on the outside, and a gradual central build-up in the inner zone. This phenomenon can be explained as a consequence of the formation of a crater of excavation through impact, where a force of expansion tends to raise the edges of the crater, as insertion continues to the bottom of the crater. An essentially similar model for small and large craters is inferred in the first phase of formation. The readjustment that follows depends on the size of the crater and the material impacted. Started by decompression, the readjustment tends to continue until balance occurs along the fracture slip surfaces that initially formed on impact. The fractures are filled by impact fault breccias, particularly by mylolisthenites. This readjustment also depends on the speed of the meteorite at impact, as suggested by the central prominences found in the Charlevoix and the bassin form for the Ries (Germany).
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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 | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.002 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.003 | 0.002 |
| Open science | 0.004 | 0.001 |
| Research integrity | 0.004 | 0.002 |
| Insufficient payload (model declined to judge) | 0.009 | 0.001 |
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".