Carbon cycling at a site of present day serpentinization: the tables, Gros Morne National Park
Bibliographic record
Abstract
This study addresses the origin of methane on Mars. A possible source of methane on Mars has been attributed to serpentinization. Active serpentinization is occurring in the subsurface at The Tablelands Ophiolite, in Gros Morne National Park, Newfoundland. Active serpentinization is evidenced by the highly reducing (Eh~ -700mV), ultra-basic (pH 10-12) groundwater springs containing dissolved methane and other lower molecular weight hydrocarbon gases, and the presence of travertine deposits. -- The source of methane in the springs as determined to be non-microbial and attributed to either thermogenic or possible abiogenic synthesis. Despite this finding, the ultra-basic springs are an extreme environment for an extant microbial community. Phospholipid fatty acid (PLFA) analysis determined an abundance of gram-negative bacteria as well as the presence algae and fungal biomarkers; and carbon isotopic analysis of PLFA suggests both heterotrophic and autotrophic metabolisms.
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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 | 0.000 | 0.000 |
| 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".