A preliminary investigation of the igneous origins of the Montney and Doig formations: Integrating igneous geochemistry techniques for interpreting sedimentary provenance
Bibliographic record
Abstract
Abstract It is well documented through sedimentological and zircon provenance studies that the bulk of the Montney sediment is sourced from the eastern North American Craton (NAC), consisting of highly felsic and heavily fractionated crustal rocks. This study presents the application of immobile element ratio diagrams to understand igneous and tectonic source terrains of the NAC sediments that source the Montney and Doig formations. Igneous rock plots, and tectonic discriminant diagrams, display Montney and Doig samples as rhyodacite-dacite with syn-collisional granitoid and volcanic arc signatures. Aluminum oxide and Mid-Ocean Ridge Basalt (MORB) normalized plots, which contain an array of elements including rare earth elements (REE) along with major oxides, show the Montney and Doig formations to have similar trends to calc-alkaline basalts, meaning highly felsic with a likelihood of crustal contamination. The Montney and Doig formation samples all show similar geochemical trends; however differences in Y and Yb trends suggest the Doig source samples were exposed to greater degrees of potential garnet, clinopyroxene or biotite fractionation, this trend displays more mafic-ultramafic influences. These mafic-ultramafic trends were not exhibited in the Montney Formation samples.
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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 | 0.000 | 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) | 0.001 | 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".