Estudio arqueológico: caracterización mineralógica de cuentas líticas del Período Formativo en los Valles Calchaquíes meridionales
Bibliographic record
Abstract
En este trabajo se presenta la caracterización de una muestra de 15 cuentas procedentes de 12 sitios arqueológicos ubicados en el Valle del Cajón, el Valle de Santa María y la Falda Occidental del Aconquija, en el extremo meridional de los Valles Calchaquíes. Estos sitios han sido fechados en el período Formativo (ca. 1500 a.C. - 1000 d.C.) mediante datación radiocarbónica o asociación contextual. Las cuentas fueron analizadas utilizando difracción de rayos X de polvo (DRX) y espectroscopia Raman (ER) para identificar los minerales responsables de su color. En casos de asignación difícil, se empleó espectroscopia infrarroja de reflectancia difusa (DRIFTS). Los principales minerales registrados fueron turquesa (CuAl6(PO4)4(OH)8.4H2O), sodalita (Na8(Al6Si6O24)Br2), muscovita (KAl2(Si3Al)O10(OH)2), ópalo (SiO2.xH2O), aragonita (CaCO3), crisocola (CuSiO3.2H2O) y calcita (CaCO3). Estos resultados revelan una notable diversidad de materiales utilizados, considerando el tamaño reducido de la muestra para el área y el período evaluados. Además, se ofrece una discusión sobre las materias primas y posibles fuentes de aprovisionamiento, relacionándolas con investigaciones previas realizadas en la región y áreas circundantes.
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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 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".