They’re old. The reason that they’re not as craggy and tall as the Rockies or the Himalayas or even the Cascades is because they’ve been eroding for 480 million years. Follow this Twitter thread for an entertaining geology lesson.
Have you ever wondered why we don’t find fossils in the Appalachian mountains?
The truth is, we do, they’re just not the kind of fossils you might think of—there are no mammals, no dinosaurs, no reptiles. There’s something else entirely. 🧵
— Alex (he/him) is fighting for trans kids ⚧🏳️⚧️ (@AlexPetrovnia) July 15, 2021
If only the rest of Twitter could be that informative!