A combined fluid-inclusion and stable isotope study of Ordovician ophicalcite units from southern Quebec Appalachians, Quebec
Bibliographic record
Abstract
This paper reports on microthermometric data of fluid inclusions from calcite cements in ophicalcite units from the Rivière des Plantes ophiolitic mélange, and integrates them with previously published stable isotope data to estimate the isotopic composition of the parent fluids. Potential primary fluid inclusions may be either monophase (liquid) or biphase (liquid+vapor). The biphase fluid inclusions show an overall range of homogenization temperatures (Th) from 85°C to 173°C, and final ice-melting temperature (Tm-ice) from -6.6°C to -2.3°C. The monophase fluid inclusions show Tm-ice values similar to those of the biphase fluid inclusions, and possibly have been entrapped at temperatures around or lower than 50°C. The d18O values of the parent fluids are estimated to be 1.9 o/oo to +4.9 o/oo SMOW if the biphase inclusions are primary, and 7.8 o/oo to 6.6 o/oo SMOW or lower if the monophase fluid inclusions are primary.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.003 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 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".