Maps are an important tool for learning about the world around you. Some maps are designed to show what roads will take you where, and others are designed to tell you about the actual land in a given ...
Geologic mapping has been one of the most fundamental mandates of the U.S. Geological Survey (USGS) since its establishment in 1879. Congress created the USGS to “classify the public lands and examine ...
Have you ever wondered what kind of rocks make up those bright and dark splotches on the Moon? Well, the USGS has just released a new authoritative map to help explain the 4.5-billion-year-old history ...
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