Tectonic evolution of the Manitoba-Saskatchewan segment of the Paleoproterozoic Trans-Hudson Orogen, Canada
Bibliographic record
Abstract
Time slices and schematic cross-sections that attempt to show the spatial and temporal relationship between geological entities within the ManitobaSaskatchewan segment of the Trans-Hudson Orogen and that are consistent with the available geological, geophysical, geochemical, isotopic, and geochronological data are presented. The Trans-Hudson orogenic belt developed as a result of closure of the Manikewan Ocean, which initially opened at about 2.1 Ga by rifting of a possible Neoarchean supercontinent. The oldest oceanic arc rocks indicate that subduction was ongoing by 1.92 Ga, with the development of a complex Manikewan "Ring of Fire" that lasted for the next 100 Ma. Intraoceanic accretion of arc, ocean-floor, and ocean-island rocks within the Manikewan Ocean at 1.87 Ga formed the Flin Flon Glennie complex, which then subsequently collided with the accreted terranes along the Hearne craton margin at ca. 1.85 Ga. These rocks were then deformed and metamorphosed over the next 75 Ma during collisions with the Sask craton and the Superior craton, both of which are interpreted to have been drifting generally northwards towards the Hearne craton. The generation of arc magmas in the orogen ceased at 1.83 Ga, an indication that continental collisions were well advanced at that stage. The present arrangement and erosion level of geological entities is related to structural reorganization after the peak of regional metamorphism at ca. 1.81. The schematic time slices and sections form part of ongoing efforts to better understand the geological evolution of the Paleoproterozoic of Canada.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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 teacher head, 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".