09/02/2026
What's under the ground at your favorite beach?
USGS - Detailed Geologic Map Of The US To Date Lets You Explore Country’s Ancient History
https://cstu.io/4f3186
Geologic maps are pretty much what they say on the tin: maps detailing an area’s geological features, such as different types of rocks and sediments, their age, and how they’re distributed. They’re used in all sorts of ways, not just by geologists wanting to double-check how old a rock formation is, but also in understanding more about possible geological resources – like minerals – and natural hazards such as earthquakes.
That’s why making sure that they contain as much detail as they possibly can is so important – and the US Geological Survey (USGS) appears to have achieved that in its newly-released geologic map of the lower 48 states, dubbed The Cooperative National Geologic Map.
Cooperative is an appropriate name: creating such a detailed map required the help of multiple different sources, which provided over 100 preexisting geologic maps created by both the USGS and individual state geological surveys.
