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Record W2152364283 · doi:10.1093/petrology/43.5.907

Petrogenesis of Early Neogene Magmatism in the Northern Puna; Implications for Magma Genesis and Crustal Processes in the Central Andean Plateau

2002· article· en· W2152364283 on OpenAlex
Pablo J. Caffe

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueJournal of Petrology · 2002
Typearticle
Languageen
FieldEarth and Planetary Sciences
TopicGeological and Geochemical Analysis
Canadian institutionsActivation Laboratories
Fundersnot available
KeywordsGeologySilicicGeochemistryPetrogenesisFractional crystallization (geology)Volcanic rockFelsicAndesiteBasaltBasaltic andesiteRhyoliteMagmatismPetrologyMaficPaleontologyVolcanoTectonics

Abstract

fetched live from OpenAlex

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 imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.018
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.020
GPT teacher head0.212
Teacher spread0.193 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it