Upper Triassic (Norian-Rhaetian) dinoflagellate cyst zonation of Nayband Formation, Tabas Block, East - Central Iran
Bibliographic record
Abstract
Due to lack of well-preserved fossils and appropriate data on the Upper Triassic strata in Iranian Plate and impor- tance of the strata in terms of hydrocarbon source potential, paleoenvironmental and paleoclimate investigations of Tethys basin. In this research we applied a palynological study on the Late Triassic (Norian-Rhaetian) Nayband Formation, East- Central Iran, to evaluate precise age of the rock unit, its stratigraphic framework and related palaeoenvironmental changes. The studied section attains a thickness of 800 meters and consists of shales, sand- stones and some interbedded limestones. Palynological assessments deduced reasonably diverse and moderately preserved terrestrial and marine palynomorphs which lead to identification of Rhaetogonyaulax rhaetica Zone of the Rhaetogonyaulax Superzone and led to an age of Norian-Rhaetian for the rock units. The recovered palynoflo- ras comprise 23 species belong to 15 genera, including radially symmetrical and monolete spores. Representatives of trilete spores as Dictyophyllidites mortonii, Kyrtomisporis laevigatus, and Gleicheiniidites senonicus are essen- tially abundant in the palynofloras examined. The assigned age is also confirmed by the association of some key misopore species as Annulispora folliculosa and Polycingulatisporites mooniensis. The recovered dinoflagellate cysts exhibit close resemblances with those recorded in Australia, Northwest Europe, Arctic Canada and North- ern Iran. Additionally, based on the detected marine palynomorph associations, accompanied by spore grains, a nearshore depositional environment has been suggested for the studied deposits in Tabas Block of Iran.
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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 | 0.002 | 0.001 |
| 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) | 0.001 | 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".