NEW ISOTOPIC AND PALAEOMAGNETIC DATA ON THE EARLY CARBONIFEROUS BEREZOVKA COMPLEX OF THE MAGNITOGORSK ZONE (SOUTHERN URALS). ARTICLE 1. ISOTOPIC DATES AND GEOCHEMICAL CHARACTERISTICS
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Bibliographic record
Abstract
This series of articles presents the first isotopic and palaeomagnetic data for rocks from the Early Carboniferous Berezovka complex of the Magnitogorsk zone. The aim of the work was to develop kinematic reconstructions for the time of its formation. For this purpose, in the vicinity of Bogdanovskoye Village, a set of 93 oriented samples was taken from nine sites; besides, two sets of 8 and 3 samples were collected respectively for geochemical and isotope-geochronological studies. Paper 1 presents the first isotopic ages for felsic volcanics from the Berezovka complex: rhyodacites – 348.5±3.1 Ma, fluidal rhyolites – 350.7±2.9 Ma, dacitic ignimbrites – 340.6±2.8 Ma, as well as geochemical characteristics for these rocks. The material composition of the studied volcanics is consistent with that of the rocks typical for the Berezovka complex. According to the newly obtained dates, Early Carboniferous volcanism started almost simultaneously throughout the southern part of the East Magnitogorsk zone and earlier than the date obtained paleontologically for its eastern part before. The newly obtaied data allow us to conclude that active volcanism in this region may have begun during the Rezhian substage of the Early Turonian.
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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 | 0.000 | 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 | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| 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 it