Constraining clastic input controls on magnetic susceptibility and trace element anomalies during the Late Devonian <i>punctata</i> Event in the Western Canada Sedimentary Basin
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Bibliographic record
Abstract
Terra Nova, 24, 301–309, 2012 Abstract Factor analyses were applied to trace element and magnetic susceptibility (MS) records of the Late Devonian palaeoceanographic ‘ punctata Event’ perturbation in the Western Canada Sedimentary Basin to constrain the extent to which geochemical anomalies were driven by 1) changes in clastic input (Factor 1; 55.1% of total variance) vs. 2) anoxia in the depositional environment (Factor 2; 35.2% of total variance). MS associates only with Factor 1 ( r = 0.971) and is significantly correlated (99.9% level) with acid‐insoluble limestone residues and clastic proxies (Al, Si, K, Ti, Zr; r = 0.542–0.639). Based on XRD analyses of a small subset of these residues ( N = 7), a multivariate linear regression model accounts for 97.7% of total MS variance as a function of variable admixing of illite, pyrite, quartz and feldspar, in turn variably diluted by stratigraphic changes in the total carbonate content.
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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) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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 it