A LATE PLIOCENE–EARLY PLEISTOCENE, INNER-SHELF, SUBTROPICAL, SEAGRASS-DOMINATED CARBONATE: ROE CALCARENITE, GREAT AUSTRALIAN BIGHT, WESTERN AUSTRALIA
Bibliographic record
Abstract
Abstract The Roe Calcarenite is a 2–3-m-thick, mostly unlithified carbonate that accumulated in shallow water at the center of the Great Australian Bight on a marine erosional surface during the late Pliocene– early Pleistocene. The grainy deposits are profusely rich in whole mollusks and the large symbiont-bearing foraminifer Marginopora vertebralis. Articulated coralline algal rods, whole discorbid, rotaliid, and miliolid foraminifers, and innumerable fragments of M. vertebralis dominate sand-sized particles. A particularly conspicuous miliolid is the encrusting form Nubecularia sp. The unit is divided into two informal members. We interpret the lower member, an areally similar mollusk-rich facies, as a record of deposition during relative sea-level rise on shallow nearshore grass beds, probably dominated by an Amphibolis community living in an overall subtropical setting. The more areally diverse upper member comprises three facies, which we envisage as having accumulated during regression in a series of adjacent intertidal sand flat and beach or supratidal microbial-lacustrine environments. These Plio–Pleistocene deposits have many parallels with Holocene grass-bank facies in western and southern Australia and likely represent accumulation in a slightly warmer ocean than today wherein the depositional setting was heated by solar radiation. This unit is an important conceptual bridge into the older Cenozoic rock record.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 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) | 0.002 | 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".