Палеозоогеографическое районирование Западной Сибири в позднем сеномане (по данным фораминифер)
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
When establishing paleozoogeograph-ical regions of the West Siberian Province in separate ages of the Late Cretaceous, the Late Cenomanian, the natural habitat of different species and the structure of foraminiferal assemblages were taken into account. Among species of an assemblage, both local and widespread forms were established. The ratio of all these forms served as the basis for distinguishing separate districts. Benthic foraminifera are closely connected with facies, so borders of districts established on the basis of these foraminiferal assemblages often coincide with the facies borders on paleogeographical schemes constructed previously for different Late Cretaceous ages. The expansion of the marine facies in Transuralia defines the location of the Western paleozoogeographical district. In the north of the province within the top of the Uvatskaya Suite, the marine gray clays and siltstones are traced, which enclose the foraminiferal assemblages Saccamina micra Ammo-marginulina sibirica (Lower) and Trochammina wetteri tumida Verneuilinoides kansasensis (Upper). Based on the systematical composition of these assemblages and lithological characteristics of enclosing rocks, the northern district of the West Siberian province was established (northwards the latitudinal flow of the Ob River). The study of the benthic foraminiferal assemblages recovered from the kern of boreholes of the Van-Eganskaya area allowed the conclusions on the expansion of the Late Cenomanian Boreal transgression almost up to the latitudinal flow of the Ob River. Southwardly (the central and eastern district) the continental facies are expanded. The recent data on foraminifera from borehole sections of the south-eastern districts (borehole E-150, Seversk) suggest the existence of the Yenisei riverine Strait in the Late Cenomanian. From the section of borehole E-150 (at depth 438.5-421.4 m) the Late Cenomanian foraminiferal assemblage was recovered, which contained the relatively high-arranged forms of the Gaudryinopsis genus. The species composition of this assemblage is analogous to that from the beds with Gaudryinopsis nanushukensis elongatus of the Van-Eganskaya area (the bottom of the Trochammina wetteri tumida Verneuilinoides kansasensis Zone). The foraminiferal assemblages from the borehole sections of the Van-Eganskaya area, from other sections of the northern and south-eastern districts are somewhat similar to those from the Canadian Province (North Canada, North Alaska). Besides new species, common species, geographical subspecies and vicariants were distinguished, thus making it possible to assign the enclosing deposits of the West Siberian Province to the Late Cenomanian.
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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) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.001 | 0.003 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.057 | 0.037 |
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 it