Provenance identification of detrital quartz using hot-cathode cathodoluminescence: an atlas of source rocks
Bibliographic record
Abstract
This study forms part of a joint project between the Geological Survey of Canada and Saint Mary's University to investigate the provenance and diagenesis of reservoir sandstones in the offshore Scotian Basin. This report documents the optical and hot-cathode cathodoluminescence (CL) character of quartz from a suite of crystalline rocks. Most of these rocks are from potential bedrock sources to the Scotian Basin; a few archived rock samples from elsewhere were selected to characterize particular types of quartz without the expense of collecting samples in the field from throughout Atlantic Canada. A subsequent publication will apply the optical and CL properties documented here to sandstones in the Scotian Basin. The Atlas proper summarizes the CL colours and petrographic characteristics from each of six groups of source rocks, and then presents key data from each of the rocks examined in that group. The Appendix provides additional information on each rock sample. The six groups of quartz types based on source rocks are: Plutonic and hypabyssal intrusions Volcanic rocks Aplites and quartz vein Low grade metamorphic rocks Medium and high-grade metamorphic rocks High-pressure metamorphic rocks
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 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 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".