Análisis palinoestratigráfico de la Formación Lajas, Jurásico Medio de la Cuenca Neuquina, Argentina
Bibliographic record
Abstract
En este trabajo se presentan las descripciones sistematicas y microfotografias de palinomorfos terrestres (94) y marinos (20) identificados para la Formacion Lajas (Jurasico medio). Los palinomorfos fueron recuperados de muestras de afloramientos pertenecientes a cuatro secciones estratigraficas (Lohan Mahuida, Puesto Bascunan, Puente Picun Leufu y Portada Covunco) localizadas en cercanias de la localidad de Zapala, en el sector centrooccidental de la Cuenca Neuquina, Argentina. Se describen miosporas triletes pertenecientes a los generos Concavisporites, Converrucosisporites, Clavatisporites, Verrucosisporites, Neoraistrickia, Pilosisporites, Trilobosporites, Antulsporites, Camptozonotriletes, Interulobites, Nevesisporites y Gleicheniidites. Se propone la nueva combinacion Clavatisporites bagualensis (Volkheimer, 1968). Dentro del paleomicroplancton se identificaron 6 especies de acritarcas asignadas a los generos Micrhystridium y Polygonium que revisten el caracter de primera mencion para la cuenca. Las microfloras analizadas se correlacionan con la zonacion propuesta para la Cuenca Neuquina por Quattrocchio et al. (1996a); Zona de Callialasporites dampieri (Toarciano tardio-Oxfordiano)-Subzona de Callialasporites turbatus (Toarciano tardio- Bajociano temprano) y Subzona de Ischyosporites marburgensis (Bajociano temprano alto- Bajociano tardio). Se sugiere para la Formacion Lajas un rango de edad comprendido entre el Toarciano tardio y Bajociano tardio.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".