Preliminary ceramic compositional analysis from the La Arenera site, Pacific Nicaragua
Bibliographic record
Abstract
Ceramic compositional analysis has begun to provide critical support in understanding ceramic economy, especially production and distribution strategies, and archaeological typology in Pacific Nicaragua that was previously based primarily on surface decoration. Here it presents preliminary results of an ongoing study exploring the paste composition of Tempisque period (500B.C.–A.D. 250) Izalco-style Usulután and Rosales Zoned Engraved ceramic types from the site of La Arenera. Findings suggest that Rosales wares were produced within Pacific Nicaragua but, based on petrological composition, were likely produced beyond the site itself. Further, all Usulután-like samples were likely produced within Pacific Nicaragua—a contradiction to our original hypothesis that some of the Usulután-like wares were imports from El Salvador and others locally made. Of particular interest is the presence of two discrete compositional paste types for the Nicaraguan-produced Usulután-like wares which indicate distinct and unrelated parent rock (and thus geological and geographical) sources for the clays and inclusions. In the final discussion we explore what the results of this preliminary analysis may intimate about the local ceramic economy of La Arenera and its broader external social connections.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".