Short-term late Holocene dry season occupation and sandy-mud flat focused foraging at Murdumurdu, Bentinck Island, Gulf of Carpentaria
Bibliographic record
Abstract
Archaeological survey, excavations, and analyses of the Murdumurdu shell midden on Bentinck Island, Gulf of Carpentaria are reported. Patterns of subsistence as well as the timing and periodicity of site use are investigated through quantification of cultural materials, AMS radiocarbon dating, stable isotopic analysis of Marcia hiantina shell carbonates (δ18O and δ13C), magnetic susceptibility analysis of the deposits and palaeoenvironmental reconstruction. Exploitation of shellfish focused on sandy-mud flat species (especially M. hiantina and Gafrarium pectinatum) with occupation occurring exclusively during the dry season (May-August). Radiocarbon dating reveals that the main period of occupation was short, albeit intense and occurred c.300 years ago. Initiation of occupation closely follows the establishment of freshwater conditions in the adjacent Marralda Swamp. These factors suggest that use of Murdumurdu was limited, potentially representing a single deposition event or multiple short, discrete episodes, in a landscape rich with similar archaeological deposits.
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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 | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| 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".