Petrogenesis of Early Neogene Magmatism in the Northern Puna; Implications for Magma Genesis and Crustal Processes in the Central Andean Plateau
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Bibliographic record
Abstract
of UOLM-2 and MM group rocks. Assuming the same end-New compositional data and petrogenetic models are presented for member compositions, the modelling suggests genesis of the MM pre-Upper Miocene volcanism in the northern Puna of Argentina magmas at higher pressure than the UOLM-2 centres ([10 kbar (22S-24S). Two phases of volcanism produced small dome vs 7 kbar), which may reflect the influence of crustal thickening in complexes of mainly silicic andesite to low-SiO 2 rhyolite. The the plateau region by the mid-Miocene. The felsic dome complexes Upper Oligocene-Lower Miocene phase (UOLM,, of this study are compositionally similar to the large-volume, calderaproduced two distinct groups of rocks. The UOLM-1 group is sourced felsic ignimbrites that dominated volcanism in the region metaluminous and mainly andesitic, with isotopic compositions like from 10 to 2 Ma and our results suggest that there is no fundamental those of the recent arc ( 87 Sr/ 86 Sr T >0706; Nd T -3). The difference in magma genesis between them. The differences in the UOLM-2 group is more silicic and peraluminous, and has isotopic volumes and the mode of eruption reflect changes in the stress and compositions indicating a substantial crustal contribution ( 87 Sr/ thermal regime with time. 86 Sr T >0713; Nd T -8). The Mid-Miocene phase (MM: 15-12 Ma) produced rocks similar in composition to those of the UOLM-2 group ( 87 Sr/ 86 Sr T >0710; Nd T -7) but with higher incompatible element contents. Ratios of Ba/Nb and Zr/
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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 | 0.000 | 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) | 0.000 | 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