OCORRÊNCIA DE FILMES DE COBRE EM BASALTOS DA FORMAÇÃO SERRA GERAL, BACIA DO PARANÁ, BRASIL
Bibliographic record
Abstract
The distribution of trace copper in normal basalt from the Serra Geral Formation, Parana Basin, Brazil, has been studied using EPMA, SEM with EDX, TEM, and SIMS methods. Relatively fresh basalts show no unique copper phases, and copper was not detected in pyroxene (iron-rich augite) and plagioclase by micro techniques. Copper-rich film are found in altered glassy basalts. Smectite clay, an unidentified Fe-Cu mineral, some Fe-Ti oxides also occur and contain appreciable copper. The copper content for 130 core samples of basalt varies between 150-200 ppm. It seems to exist a positive correlation between electrical conductivity and copper content of basalts. Patterns of electrical conductivity over large areas could be of use in identifying zones of low temperature hydrothermal alteration and in the study of fluid circulation during cooling.
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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 | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.003 | 0.001 |
| Open science | 0.003 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.003 | 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".