Mud-magma interactions in the Dunnage M61ange, Newfoundland
Bibliographic record
Abstract
central Newfoundland, is ho t to a suite of dacitic to rhyolitic intrusions. Intrusion occurred during the late stages of m61ange formation. Lobate, pillowed, corrugated and pahoehoe-like igneous contact surfaces, complex interlayering of host mudstone and dacite, and the occurrence of peperite, indicate that the magma intruded unconsolidated mud and the adjacent sediment was fluidized. This evidence for shallow emplacement of the magma is inconsistent with the existence of a tectonic overburden during m61ange formation, and supports an olistostromal origin forthe Dunnage M61ange. The Cambro-Ordovician Dunnage M61ange, part of back-arc basinal assemblages in north central Newfoundland, is host to a suite of daci-tic to rhyolitic intrusions, collectively known as the Coaker Porphyry (Kay 1972). The intru-sions are confined to the m61ange terrane, where they comprise approximately one-third of the outcrop area. The age, physical charac-teristics, and distribution of these intrusions suggest that they were intruded uring m61ange formation (Williams & Hibbard 1976). In this paper, the physical relationships between the Coaker Porphyry and the host m61ange are described and their origin is explained. Implied conditions during intrusion, and the origin of the m61ange, are discussed. Regional setting of the Dunnage
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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 | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".