Comparative Insights into Banded Iron Formations of Ivory Coast and Guinea
Bibliographic record
Abstract
The Banded Iron Formation (BIF) is part of the Precambrian history. They are well studied in several provinces of the world: Harmesley range (Australia), Transvaal (South Africa), Krivoy Rog (Ukraine), Labrador (Canada), Lake Superior (USA), Gunflint and Biwabik (USA) and Isua (Greenland). They constitute a world-class economic reserve in Guinea and Ivory Coast, more particularly in the Nimba-Simandou-Klahoyo-Tia Mountains). The main BIF studied are located on the borders of these two countries. These BIF present close similarities in petrography, structural metallogeny and geochemistry. The metallographic study has shown that the mineralization is essentially composed of magnetite. Although they share some characteristics, they show some typical divergences in terms of metamorphism and age. The Mount Klahoyo and Tia BIF are of Archean Algoma type while those of Guinea are of Proterozoic age, characteristic of BIF of the Lake Superior type. Overall, most of the mineralization is contained in magnetite or itabirite quartzites (BIF). From this, we can deduce that the BIF of Guinea are a continuation of those identified in Ivory Coast.
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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 | 0.003 | 0.002 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".