Structural units of the central arctic and their relations to the mesozoic arctic plume
Bibliographic record
Abstract
The integration of information obtained from onshore and offshore geological and geophysical research undertaken in the context of the International Polar Year has led to the following results. The continental crust is widespread in the Arctic not only beneath the shelves of polar seas in the framework of the Amerasia Basin but also in the Chukchi-Northwind, Lomonosov, and Mendeleev ridges; a combination of continental and oceanic crusts is inferred in the Alpha Ridge. The Amerasia Basin is not an indivisible element of the Arctic Ocean either in genetic or structural terms but consists of variously oriented basins different in age. The first, Mesozoic “minor ocean” of the Arctic Ocean—the Canada Basin—arose as a result of impact of the Arctic plume on the high-latitude region of Pangea. This inference is supported by the vast Central Arctic igneous province that comprises the Jurassic-Mid-Cretaceous within-plate and ocean-island basaltic and associated rocks. The rotational mechanism of opening of this basin is explained by the slant path of the plume head motion, which resulted in breaking-off and displacement of a fragment of Pangea. The effect of the Arctic plume was expressed during all stages of the opening of the Canada Basin and exerted effects on the adjacent part of the Eurasian continent during the formation of the Verkhoyansk-Chukotka tectonic domain. The Canada Basin was an element of the segmented system of Atlantic spreading ridges, while the Arctic plume that initiated its evolution was genetically related to the episodically acting African-Atlantic superplume. In comparison with the Pacific superplume, the low productivity of African-Atlantic lower mantle upwelling became the cause of slow and ultraslow spreading in the Atlantic and Arctic oceans and determined the passive character of their margins, including the Canada Basin.
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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 | 0.000 |
| Science and technology studies | 0.000 | 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".