The Ford’s Bight Diatreme A Cretaceous Alnöite Pipe from the Northern Labrador Coast and Possible Onland Remnant from the Opening of the Labrador Sea
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Bibliographic record
Abstract
Abstract The Ford’s Bight Diatreme is an apparently rare feature on the Precambrian coast of Labrador. Originally described as a Jurassic-Cretaceous sedimentary breccia cut by lamprophyric dykes, an early report of marine microfossils in the strata poses an interesting sedimentary and petroleum geology problem. In revisiting the area, the succession is now viewed as a rift related diatreme with a Cretaceous (ca. 137 Ma) radiometric age. In earlier work, this rock was dated from assemblages of poorly preserved Jurassic and early Cretaceous marine microfossils. Our own lengthy search for fossils in igneous rocks and clasts and carbonate matrix was fruitless. Some apparently carbonized debris is identified in microscopy and with some oddly shaped (non-biologic) microcrystalline structures seen under SEM. With an age and origin for this feature established from basic geology and radiometric dating, this therein leaves an unresolved petroleum exploration risk - and, namely, did Jurassic marine conditions cover this part of the Labrador coast before earliest Cretaceous volcanism?
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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 | 0.001 | 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