BIOGENIC NITROGEN FROM TERMITE MOUNDS AND THE ORIGIN OF GERHARDTITE AT THE GREAT AUSTRALIA MINE, CLONCURRY, QUEENSLAND, AUSTRALIA
Bibliographic record
Abstract
Le gisement Great Australia, pres de Cloncurry, au Queensland, en Australie, montre un enrichissement inhabituel en gerhardtite, nitrate de cuivre. D'apres la proportion des isotopes d'azote, l'ammoniaque oxyde provenant des nids de termites avoisinants aurait fourni le nitrate requis pour la mineralisation en gerhardtite. Le rapport δ 15 N et la teneur en nitrate des nappes d'eau souterraine diminuent progressivement avec la profondeur, ce qui indique une source d'azote pres de la surface, avec δ 15 N AIR > +10% c . Les valeurs de δ 15 N typiques de gerhardtite (δ 15 N AIR = +13.3%c) et les echantillons des amoncellements locaux construits par les termites (δ 15 N AIR =+13.5%o) sont quasimentidentiques, et l'emplacement isole dans le desert ecarte la possibilite d'une source de l'azote dans les fosses septiques ou le fumier. De meme, la remobilisation de nitrates inorganiques anciens provenant de sequences evaporitiques serait improbable a cause du contexte geologique et du climat. D'apres les relations de terrain, la distribution des nids de termites serait un indicateur fiable de la speciation des metaux de base dans la zone d'oxydation de gisements de sulfures de ces metaux.
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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 | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".