Structure and magnetic fabric of the Quetico metasedimentary rocks in the Calm Lake - Perch Lake area, near Atikokan, Northwestern Ontario / by Perry Sarvas.
Bibliographic record
Abstract
The Quetico metasedimentary rocks are the metamorphosed \nequivalents of a turbidite sequence, comprised of a repetative \ninterstratification of sandstones and mudstones. The rocks are \nmetamorphosed to lower greenschist facies, but metamorphic grade \nincreases progressively from north to south. Anchimetamorphosed \nphyllites and slates in the north part of the present study area grade \nprogressively into biotite schists in the south part. \nInterpretation of structural features in the study area, mainly \nbedding(S0) -cleavage(S1) relationships and structural facing \ndirections, has led to the delineation of a number of major folds. \nThese are tight to isoclinal, asymmetric sheath folds, with axial \nplanes arranged en echelon and slightly oblique to the dominant eastwest, \nvertically-dipping, structural trend. The orientation, geometry \nand disposition of the F1 folds suggest the Quetico rocks of the \npresent study area have experienced a regional dextral transpressional \ntectonic evolution, with components of north-south \nregional shortening and east-west regional dextral shear, with a \npossible component of vertical (south side up) displacement. \nThe Quetico metasedimentary rocks have a polyminerallic \nmagnetic mineralogy comprised of significant proportions of a \nferrimagnetic (magnetite and pyrrhotite) and a paramagnetic \n(chlorite, biotite, muscovite) component. The rocks possess a \npredominantly tectonic magnetic fabric, which consists of a \ndeformational, and a metamorphic, magnetic fabric. In some \nrocks (especially coarse-grained sandstones with wide-spaced \ncleavage planes) a depositional magnetic fabric is partially \npreserved. The complexities involved in having component \ndeformational, metamorphic and depositional magnetic fabrics \nIndicate that the principal magnetic susceptibility directions of the \nrock's magnetic susceptibility anisotropy cannot be considered \nreliable Indicators of principal finite strain directions in the Quetico \nmetasedimentary rocks. Great care must be taken in interpreting the \nsignificance of principal magnetic susceptibility directions.
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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 | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| 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".