Interactive geological map of France built on MapLibre GL. 14 regions, ICS stratigraphy, mineral crystallography, BRGM BD Charm-50 data.
Context
France's public geological data (BRGM) is rich but hard to access. This project makes it visually explorable — for geologists, curious minds, and mineral enthusiasts.
My contribution
- Vector geological base map (BD Charm-50 BRGM)
- 14 geological regions with interactive filters
- Complete ICS stratigraphy with chronology
- Crystallographic sheets for key minerals
- MapLibre GL vector rendering — smooth at all scales
- BRGM public data, 100% open source
// technical challenge
Converting BRGM shapefiles into web-optimised GeoJSON without blowing up file sizes — and making them interactive without slowing down map rendering.