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annotations_creators: no-annotation language: en license: mit source_datasets:
- NoraResearchLab/Environmental_geology task_categories:
- geospatial tags:
- gold
- nigeria
- mining
- prospectivity
- geology
Nigeria Gold Prospectivity Map (Phase 1)
Overview
This dataset contains the Phase 1 heuristic gold prospectivity map for Nigeria, generated using the NORA (Nigeria Open Resource Atlas) environmental and gravity layers.
Methodology
The score is calculated based on a weighted heuristic of:
- Gravity Anomalies (30%): Identifying density variations linked to mineralized zones.
- Terrain Roughness (20%) & Slope (15%): Geomorphological indicators of structural controls.
- Elevation (15%) & Aspect (5%): Hydrological and exposure factors.
- Terrain Context (15%): Combined index of local geomorphology.
Files
nigeria_gold_prospectivity_phase1.tif: GeoTIFF raster at 0.02-degree resolution (approx. 2km grid).
Usage
The scores range from 0 to 100, where 100 represents high theoretical prospectivity based on the input layers.
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