Two-Level Subduction in the Upper Mantle as a Mechanism for the Evolution of the Eastern Arctic Lithosphere for the Late Jurassic–Early Cretaceous
Bibliographic record
Abstract
The popular rotational hypothesis of the formation and evolution of the main structures of the Eastern Arctic lithosphere during the Late Jurassic–Early Cretaceous, in particular, the opening of the Canadian Basin, the closure of the Angayucham and South Anyui paleoceans, and the formation of collision structures during the movement of the Alaska and Chukotka blocks, is discussed. The difficulties of this hypothesis and other kinematic schemes of the evolution of the Arctic lithosphere are noted, and it is concluded that it is impossible to make a good choice in favor of any model of Arctic evolution within the framework of a purely kinematic approach. A generalization of the basic geodynamic model of Arctic evolution previously developed for the Late Cretaceous and Cenozoic to the earlier period of evolution of the Amerasian Basin in the Late Jurassic–Early Cretaceous is proposed.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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".