STUDY ON THE MINERALOGY OF VOLCANICS OF THE YAMANSU GROUP IN THE JUELUOTAGE TECTONIC BELT,EAST TIANSHAN
Bibliographic record
Abstract
Much controversy exists on the tectonic setting of the Yamansu Formation in the Jueluotage tectonic belt,East Tianshan,China.Phenocrysts' composition and texture may reflect igneous series,tectonic setting and give the physical and chemical information about magma evolution.This paper reports the research results of plagioclase and clinopyroxene from the Yanmansu Formation.Clinopyroxene crystals are of augite-enstatite series,and some of them are in equilibrium with their host magma on temperature and pressure.The clinopyroxene discrimination diagram shows that the host magma is subalkaline and was formed in asubduction zone environment.This result is in consistency with that of trace element research.The clinopyroxene crystallization temperature is at about 1150 ℃and the pressure is in consistency with about 5-10 km depth based on crystallization-melt thermobarometric calculation.Most of the plagioclase phenocrysts are labradorite,but plagioclase JX-24-1 is andesine,and this composition difference and its structure indicate that it is a wall-rock xenocryst.Clinopyroxene and plagioclase phenocrysts provide evidence suggesting that the Yamansu Formation experienced crustal assimilation and fractional crystallization at upper crust depth.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 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) | 0.001 | 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".