Structural relations between the Shuswap Terrane and the Cache Creek Group in Southern British Columbia.
Bibliographic record
Abstract
The rocks of the Shuswap terrane have been the subject of controversy for more than 65 years. Jones (1959) recently presented evidence that in the Vernon map-area the original rocks and the superimposed metamorphism are all pre-Permian in age and probably pre-Cambrian. Jones also described (1959, pp. 47-4-9 and pp. 28-29) five different localities where unconformities separate Shuswap rocks of the Monashee and Chapperon groups from rocks of the Cache Creek group of Permian age. The present writer mapped in detail three of these localities, near Lavington, at B.X. Creek and at Salmon River. Near Lavington the contact described by Jones as an unconformity is considered to be a fault. However, the relations between metamorphic and non-metamorphic rocks are compatible with the existence of an unconformity which, if it exists, is not exposed. At B.X. Creek, the arcuate path described by Jones as marking an unconformity was found to follow a nearly-straight line in a northerly direction and to coincide with two parallel, steeply-dipping and north-trending faults which truncate the non-metamorphic rocks. At Salmon River the evidence for an unconformity is strong. The rocks below the unconformity are chloritic and argillaceous schists of the Chapperon group and strike northeast with steep dips to the southeast and northwest. The rocks above the unconformity are calcarenites, feld-spathic volcanic wackes and tuffs grading upward into argillites, and have been described by Jones as part of the Cache Creek group; they strike north or slightly east of north and dip gently to the west or west-northwest.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.003 | 0.005 |
| Science and technology studies | 0.004 | 0.002 |
| Scholarly communication | 0.002 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".