Deep-Marine Pseudo Dune Cross-Stratification—Similar, But Completely Different
Bibliographic record
Abstract
Abstract: High-angle cross-stratification related to the downflow migration of subaqueous dunes is common in the continental sedimentary record but is puzzlingly uncommon in deep-marine strata. In deep-marine rocks of the Windermere turbidite system, however, several centimeters to decimeters-thick, high-angle cross-stratified sets that resemble dune cross-stratification are commonly observed, but in an upflow direction characteristically transition abruptly at the brinkpoint into planar stratification. Typically, the transition coincides with an abrupt deepening of a basal scour, and into and onto which a progressively lengthening and commonly thickening wedge of high-angle cross-strata downlap. Moreover, the several-meters to several-decameters-long sets are longitudinally discontinuous, even though they typically sharply overlie an areally expansive sandy substrate and evidence of scour by a younger event is generally absent. Instead these strata are interpreted to represent the flat-topped, steep-fronted, prograding fills of isolated scours, and therefore in spite of resembling the cross-stratification formed by the migration of subaqueous dunes, dunes were not involved in deposition of these strata.
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How this classification was reachedexpand
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 | 0.001 | 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 | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.012 | 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 teacher head, 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".