Geochronology of the Letete and Waweig formations, Mascarene Group, southwestern New Brunswick
Why this work is in the frame
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Bibliographic record
Abstract
Felsic tuffs from the Letete and Waweig formations of the Mascarene Group in southwestern New Brunswick have essentially identical U-Pb ages of 437 ± 7 and 438 ± 4 Ma and were, therefore, both deposited in the Llandoverian of the Early Silurian. These radiometrically determined ages bring into question the validity of assigning Late Silurian ages to rock units in the Mascarene Basin based on the presence of Salopina sp. The new data also indicate that rate of deposition for the volcanic sequences in the Mascarene Basin of New Brunswick is similar to that of the classic sections in coastal Maine. RESUMÉ Les tufs felsiques des formations de Letete et de Waweig du groupe de Mascarene dans le Sud-Ouest du Nouveau-Brunswick ont des âges au U-Pb essentiellement identiques de 437 ± 7 et 438 ± 4 Ma; ils se sont par conséquent déposés dans les deux cas au cours du Valentien, pendant le Silurien précoce. Ces âges radiométriques remettent en question la validité de l'attribution d'âges remontant au Silurien tardif aux unités rocheuses du bassin de Mascarene basée sur la présence de l'espèce Salopina. Les nouvelles données révèlent par ailleurs que le rythme de sédimentation des séquences volcaniques dans le bassin de Mascarene au Nouveau-Brunswick est semblable à celui des sections classiques le long du littoral du Maine.
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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 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.010 | 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