Nueva Cadiz Beads in the Americas: A Preliminary Compositional Comparison
Bibliographic record
Abstract
Nueva Cadiz and associated beads are among the earliest categories of European glass beads found in the Americas. Named after the site in Venezuela where they were first identified, these tubular, square-sectioned beads occur in regions of 16th-century Spanish colonial trade. A similar style occurs around Lake Ontario in northeastern North America in areas of 17th-century Dutch and French colonial trade. We compare the chemical composition of beads from South America and Ontario, Canada, to explore their provenience and technology. Differences in key trace elements (Hf, Zr, Nd) strongly indicate separate sand origins for the two bead groups. Comparison with soda-lime glass made in Venice and Antwerp reveals chemical similarities between the South American beads and Venetian glass, and between the Ontario beads and Antwerp glass. The analysis also sheds light on beadmaking technologies.
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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) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.012 | 0.001 |
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; both teacher heads agree on what is shown here.
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".