MULTI-STRATIGRAPHICAL SUBDIVISION OF THE DENGYING FORMATION AT SIXI,YICHANG, EASTERN YANGTZE GORGES AREA
Bibliographic record
Abstract
Litho and sequence stratigraphy research together with analysis of the trace fossil assemblage indicated that the Dengying Formation could be subdivided into two different sequences by the erosive boundary in the middle Shibantan Member of the Formation at Sixi of eastern Yangtze Gorges area: the lower limestone contains abundant diverse trace fossils and vendotaenids, similar to the Shibantan Member in standard section of the Dengying Formation at Liantuo in Yichang. At Sixi section, the Shibantan Member carbonate possess positive δ 13 C values, ranging from 3.01‰ to 4.50‰, while the δ 13 C values for Baimatuo Member dolostone range from 1.80‰ to 2.30‰, So, carbon isotopic compositions of the Dengying Formation at Sixi is similar to those of the upper part of the terminal Proterozoic in Namibia, northeastern Siberian and northwestern Canada, indicating that the Dengying Formation at Sixi deposited after evolution of the Ediacara fauna to the end of Neoproterozoic.
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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 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".