Abstract: The search for the Fredericton Fault: new exposures along the Longs Creek to Fredericton section of the (toll-free) Trans-Canada Highway
Bibliographic record
Abstract
New exposures along the 23 km stretch of the Longs Creek (Kings Landing) to Fredericton section of the Trans Canada Highway provide a transect through all the major lithological units of the Fredericton area, including: multidefonned Silurian Kingsclear Formation turbidites; postSilurian mafic dykes and Pennsylvanian sandstones, conglomerates and red siltstones. Two generations of macroscopic structures and related fabrics dominate most of the Silurian outcrops. F2 folds are open to tight upright structures, often approximating a chevron profile heavily modified by accommodation structures in the form of minor faults. The F2 fold axes vary from horizontal to a moderate plunge towards the northeast or southwest. An axial planar cleavage (S2) is locally developed in the more pelitic lithologies. Intersection of S2 with bedding usually creates a prominent crenulation lineation (Lin), and an earlier fabric (S 1) is generally bedding-parallel or sub-parallel. Locally, F 1 closures can be identified, and here a discrete S1 cleavage occurs oblique to bedding. In such closure areas bedding can be inverted. At least two sets of post-F2 kink bands are present, and very locally a set of F3 folds with horizontal axial planes, horizontal axes, and chevron profiles are present. The southwestern-most unconformable contact between the Kingsclear Formation and the overlying shallowly dipping Pennsylvanian sedimentary rocks is located near Mountain Road, at the southern extent of Longs Creek, but is not exposed. The northeastern-most contact of the Pennsylvanian and Silurian rocks is defined to within 20 m along the southwest-bound carriageway, 4.3 km northeast of Mazzerole Settlement Road. Here the Pennsylvanian beds are vertical and even locally overturned, though curiously, the structures in the adjacent Silurian rocks indicate that they have not been rotated relative to their correlatives to the southwest of the Carboniferous cover. The Fredericton Fault, a major fault zone that extends into New England, is not exposed in the new exposures. However, we have defined its position to within a few metres in a stream gully 100 m to the northeast of the bridge at Deerwood Drive.
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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 | 0.002 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.010 | 0.001 |
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".