A new federal map let’s you see what kind of rocks you are walking on across the country

Whether you're an avid rock collector or simply interested in the world around you — this new tool is designed to make ...
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A New USGS Map Lets You See the Layers of Rock and Sediment Hidden Directly Beneath Your Feet

In late August, the U.S. Geological Survey quietly released a new tool that could reshape how Americans understand the ground beneath their feet. The Cooperative National Geologic Map, now live online ...