Sedimentology of Surficial Coolwater Carbonates on the Continental Shelf of Tasmania, Australia
Bibliographic record
Abstract
The continental shelf of Tasmania and Bass Strait is veneered by surficial carbonate and terriginous sediment, which represents the coldest carbonate assemblage on the southern shelf of Australia. Three major facies are recognized based on dominant components, and are further separated into eight subfacies. Quartzose sand is a nearshore facies, whereas Holocene biogenic sand and gravel is found outboard in deeper waters. Relict sand and gravel is located between these facies on the majority of the shelf, although it is rare on the narrow, eastern shelf. When Holocene biotic sediments are considered, five facies can be identified based on the abundance of bryozoans, molluscs, benthic foraminifer, sponge spicules, and coralline algae. Molluscs and bryozoans dominate the most widespread facies; molluscs are numerous nearshore, in large bays, and on granitic ridges, and bryozoans are abundant in deeper, or nutrient rich waters. Again, eastern and western shelves differ, in that molluscs, which are common in the east, only occur near rivers on the western shelf. The key factor controlling this distribution is the level of trophic resources available. Dominant bryozoan growth forms provide detailed resolution of the Holocene sediment and relative importance can be linked to water energy or substrate. In general, delicate branching forms are found in deeper water on the eastern and western shelves, as well as the eastern side of the Bass Strait, whereas articulated zooidal forms dominate higher energy waters and areas with unstable or fine substrate, such as the southern shelf and western Bass Strait.
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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 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| 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".