SantonianCampanian planktonic foraminifera in the New Jersey coastal plain and their distribution related to the relative sea-level changes
Bibliographic record
Abstract
The Upper Cretaceous (SantonianCampanian) sediments of the New Jersey coastal plain subsurface yielded rich planktonic foraminiferal assemblages at certain stratigraphic levels in three wells: Ocean Drilling Program (ODP) Leg 174AX at Bass River and Ancora sites and a United States Geological Survey borehole in Freehold. Relative sea-level fluctuations can be recognized by following the presence or absence and amounts of two groups of planktonic foraminifers, the shallow water and deep water faunas. The former consists of globular-chambered species, while the complicated tests showing keels, heavy ornamentation and elaborated umbilical structures are confined to the latter. The Merchantville (late Santonian) and Marshalltown (early late Campanian) formations, which represent transgressive system tracts, show the richest and most diverse planktonic foraminiferal assemblages. In the highstand system tracts, represented by the Woodbury (early Campanian), lower Englishtown (middle Campanian), Wenonah (late Campanian), and Mount Laurel (late Campanian) respectively, a gradual decrease in the planktonic foraminiferal diversity and richness was observed. Planktonic foraminiferal peaks of lower amplitude are recorded in the proximity of the minor flooding surfaces. A five-fold planktonic foraminiferal zonal framework for the Santonian-Campanian stratigraphic interval is proposed. Paleobathymetry strongly influenced the planktonic foraminiferal distribution and biostratigraphic resolution.
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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 | 0.000 | 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) | 0.001 | 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".