Geochemistry of Carboniferous low metamorphic grade sedimentary and tholeiitic igneous rocks in the western Acatlán complex, southern Mexico: deposition along the active western margin of Pangea
Bibliographic record
Abstract
Las rocas metasedimentarias de bajo grado en el complejo Acatlán occidental (área de Olinalá) del Sur de México, ocurren en dos unidades diferentes de cuarcitas y filitas denominadas aquí como Progreso y Zumpango de edad Carbonífero Inferior y medio, respectivamente. La Unidad Zumpango está caracterizada por filitas y cuarcitas, mientras que la Unidad Progreso, está formada principalmente por cuarcitas, localmente interestratificadas con basaltos almohadillados e intrusionadas por diques máficos, toleiíticos con afinidades N-MORB y fraccionamiento moderado. El depósito de la unidad Progreso fue contemporáneo con la extrusión de las rocas metamórficas de alto grado del complejo Acatlán en una zona de subducción activa y con el depósito de rocas misisípicas en el margen del terreno Oaxaqueño adyacente. La afinidad toleiítica de las rocas máficas sugiere extensión en esta margen activa. La afinidad meso-continental (EE.UU.) de la fauna en estas últimas sugiere que Pangea estaba ya amalgamada y que estos eventos tuvieron lugar en la margen occidental de Pangea.
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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".