Parallel ridges stretch across the Virginia border • Earth.com

Last update: June 1st, 2020 at 3:07 pm

Today’s Image of the Day comes from the NASA Earth Observatory and features two ridges that stretch across the Virginia border.

While the ridges are located just a few kilometers away from each other, they have little else in common. The image was captured by the Operational Land Imager (OLI) on board the Landsat 8 satellite.

To the left, George Washington National Forest’s Massanutten Mountain appears long and consistently narrow. To the right, however, Shenandoah National Park’s Blue Ridge looks more irregular and choppy. This is because the rock under Blue Ridge is primarily igneous, meaning it must have originated from cooling lava. Massanutten Mountain, on the other hand, got its shape from the tectonic collision between North America and Africa over 300 million years ago.

By Rory Arnold, Earth.com Staff Writer

Source: NASA Earth Observatory

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