A worldwide geologic map from Macrostrat. Created by cross-referencing over 200 geologic data sources, the Bedrock Geology layer can tell you exactly what kind of rock you're standing on, anywhere in the world. The map includes spatial and temporal distribution of sedimentary, igneous, and metamorphic rock formations. In iOS and the web, it's interactive: Tap a feature to learn more about the rock type and history. Resolution may vary by country. The complete list of data sources can be found here:


Macrostrat CC-BY-4.0

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