European Geological Map Viewer

The EGDI Map Viewer provides an interactive environment for visualising European geological maps and spatial datasets. It allows users to explore geology at multiple scales, from continental overviews to detailed regional information.

Through the map viewer, users can examine lithology, geological units, faults and rock types within a consistent geological framework. The tool supports geological visualisation for both general understanding and advanced scientific analysis.

The Map Viewer is designed for researchers, GIS professionals, planners and educators who need intuitive access to harmonised geological data for exploration, analysis and communication.

Explore European geology in one harmonised map viewer

The EGDI Geological Map Viewer of Europe lets you visualise harmonised geological information across Europe through a single, consistent interface. It brings together datasets from national geological surveys and European projects so that researchers, GIS professionals, educators, and policy teams can explore lithology, geological units, and other reference layers within a shared geological framework.

What you can do with the Map Viewer

Use the viewer to:

• Navigate across Europe and switch between multi-scale geological map layers.
• Inspect lithology and geological units to understand the distribution of rock types and formations.
• Compare regional patterns within a consistent framework to support cross-border analysis.
• Combine geology with thematic information from EGDI projects and scientific themes (e.g., mineral resources, groundwater and coastal hazards) via related pages and tools.

Who is the Map Viewer for?

• Researchers & analysts: quick pan-European context for geological interpretations and reporting.
• GIS & technical users: a reference map to support data discovery and interoperability workflows.
• Policy & planning teams: background geological context for energy transition, resources and environmental assessments.
• Education & outreach: an accessible entry point to European geology.

How to use the Geological Map Viewer (3 steps)

1. Open the viewer from this page and choose the map project or layer set that best fits your goal.
2. Zoom to your area of interest and toggle layers (lithology, geological units, framework layers) to build the view you need.
3. Inspect features to see attribute information and then follow links to related EGDI resources (projects, themes or metadata catalogues) for deeper detail.

Related EGDI resources

To go beyond the map visualisation, use EGDI tools and content pages to discover datasets, documentation and thematic information:

• Data Search: find datasets relevant to groundwater, monitoring and time series use cases.
• Scientific themes: explore topic-focused pages (raw materials, groundwater, coastal hazards, CO₂ storage).
• Projects: learn how key initiatives contribute to harmonised layers and services.