OneGeology Global Geological Map
OneGeology is the world's largest digital geological map initiative, harmonizing national geological surveys into a consistent global map with WMS and downloadable data access.
Format
WMS / WFS / GeoTIFF / Shapefile
Geometry
Polygon (geologic units)
Coverage
Global (100+ surveys)
Resolution
1:1M to 1:5M scale
About this dataset
UNESCO/OneGeology global geological map at 1:1M-1:5M scale with harmonized lithostratigraphic classification.
OneGeology is an international initiative involving over 100 geological surveys from around the world, providing a global digital geological map at 1:1 million to 1:5 million scale. It harmonizes national geological maps into a consistent classification system with rock types, ages, and lithostratigraphic units, accessible via WMS and downloadable datasets.
How to download
- 1 Open the OneGeology portal.
- 2 Navigate the map viewer or use the WMS endpoint in QGIS.
- 3 Select a region or country to view geological units.
- 4 Export the data via WFS or download national geological map files.
FAQ
How does OneGeology compare to USGS geologic maps?
OneGeology provides global coverage with standardized classification, while USGS maps offer much finer detail (1:24k vs 1:1M) within the United States.
Can I access OneGeology data in QGIS?
Yes. OneGeology provides WMS and WFS services that can be added directly in QGIS as web data sources.