Bibliographic record
Abstract
Abstract Postdepositional dolomite occurs in the shallow subsurface of several Caribbean Islands in Tertiary and Pleistocene carbonates, e.g., on Barbados, Grand Cayman, Jamaica, and St. Croix. Recent investigations have interpreted these dolomites as relatively early-diagenetic formations from "chemically modified seawater", mainly on the basis of petrography, stratigraphic association, and stable isotope values. Interpretations of the hydrologic regimes during dolomitization vary and usually include freshwater-seawater mixing, thermal or density-driven convection of seawater, or a combination thereof. This paper offers two alternative interpretations based on the relatively low Sr isotope ratios of the dolomites (0.7085 to 0.7092) and their proximity to active plate margins. Dolomitization may have been driven by plate tectonics, i.e., either by thermal convection of pore fluids at active spreading centers or by tectonic expulsion of fluids from accretionary prisms. The dolomitizing solution was seawater that was enriched in 86Sr by magmatic-hydrothermal solutions or by interaction with siliciclastics in an accretionary prism, respectively.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 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) | 0.002 | 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".