GRANULITE-FACIES CONDITIONS PRESERVED IN VANADIUM-AND CHROMIUM-RICH METAPELITES FROM THE PARADISE BASIN, WIND RIVER RANGE, WYOMING, U.S.A.
Bibliographic record
Abstract
Nous documentons la presence de metapelites ayant des niveaux anormalement eleves de plusieurs elements de transition, y inclus V, Cr and Zn, dans une suite de roches archeennes de la region de Paradise Basin, dans la chaine de Wind River, au Wyoming. Ce sont des roches a sillimanite contenant jusqu'a 0.56% de V 2 O 3 et 0.32% de Cr 2 O 3 . Les mineraux coexistants sont aussi enrichis en V et Cr, y inclus le grenat, la hercynite et la biotite. Nous avons calcule les valeurs de KD pour V et Cr par rapport a Al pour le grenat, la sillimanite et la hercynite. La repartition de V/Al entre grenat et sillimanite est a peu pres egale (K D = 0.98), tandis que Cr/Al est fortement favorise par le grenat (K D = 6.9). La hercynite favorise fortement V/Al par rapport a grenat et sillimanite (K D egal a 15) et Cr/Al par rapport a grenat et sillimanite (K D egal a 27 et 189, respectivement). La hercynite contient en plus la plupart du zinc, sous forme de la composante gahnite, formant jusqu'a 10% d'une solution solide. Les conditions P-T enregistrees dans le coeur des mineraux de la matrice indiquent un paroxysme metamorphique au facies granulite, a plus de 9.5 ′ 0.1 kbar et 780 ′ 50°C. Dans cette matrice, la composition de la bordure des mineraux indique des conditions de plus faible intensite qui definissent une portion du trace P-T lors de la retrogression. Il n'y a aucune evidence d'introduction d'elements le long de veines ou de fractures: les quantites inhabituelles de V. Cr, et Zn seraient fournies par lessivage de materiaux plus anciens, deposes sous forme de grains clastiques.
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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 | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 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".