Exotic Mo isotope composition in the Nuvvuagittuq Greenstone belt
Why this work is in the frame
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Bibliographic record
Abstract
The isotopes of Mo, a moderately siderophile element (MSE), can potentially be used as a new tracer of mantle heterogeneities produced as a result of late accretion, i.e. the ~0.5% addition of extraterrestrial materials to the Earth's mantle after core formation, which is most commonly invoked for explaining the high concents of highly siderophile elements (HSE) and their chondritic relative abundances in the present-day mantle [1]. The rationale for such an approach is based upon (1) the observation that most extraterrestrial materials have different Mo isotope compositions compared with the present-day accessible Earth's mantle. Therefore, late accretion is expected to have changed the Mo isotope composition of the Earth's mantle. (2) the evidence for the preservation of early mantle heterogeneities, in particular in archean rocks, such as those from the Nuvvuagittuq Greenstone Belt (NGB) (Canada, 3.8 Ga) [2,3].
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| 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 | 0.000 | 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 | 0.001 |
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 it