Geochemical Classification, Petrogenetic Association of Magmatic Rocks in the Gboko Area and the Tectono-Magmatic Influence on the Evolution of the (Gboko Area) Lower Benue Trough of Nigeria
Bibliographic record
Abstract
Magmatism in the Gboko area is found to be genetically related to the evolution of the lower sectorial part of the intracratonic sedimentary Benue Trough of Nigeria.Geochemical interpretations of major and trace data show that the rocks which are mainly volcanics with some hypabyssal and plutonic varieties are mainly basaltic (basalts, basaltic trachyandesites, trachydacites), phonolitic (phonolite, tepri-phonolites,), rhyolites and nepheline syenites are generally of calc-alkaline series.They are peraluminous to metaluminous with a few peralkaline.Major and trace elements tectonic discrimination plots reveal that the basaltic rocks are characteristic of Within Plate Basalts (WPB), Oceanic Arc Theoliites (OIT), and Ocean Island Alkalic (OIA) while the nepheline syenites are characteristic of Within Plate Granites (WPG).The plots also show that the tectonic setting is continental in a spreading centre and related to orogenesis.The evolved rocks in the Gboko area of the Lower Benue Trough are products of interaction between magmatism and tectonism which resulted from progressive crustal thining related to a spreading centre that regulated contamination from the crust and/or asthenosphere.
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How this classification was reachedexpand
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 | 0.002 | 0.004 |
| 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 | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".