Nebraska Earthquake Update; Widely Felt Earthquake Strikes, Has Unusual Origin

Описание: On March 1st, an unusually large earthquake struck Nebraska, being felt across at least 5 states and up to 9 million people. While this was only a magnitude 4.1 quake, it was large in the context of Nebraska which isn't generally too seismically active. However, upon further investigation, it appears that this earthquake was caused by something unusual; remnants of an ancient towering mountain range which eroded away more than 1 billion years ago.

Thumbnail Photo Credit: Google Earth. Image Landsat / Copernicus. This image was overlaid with text, and then overlaid with GeologyHub made graphics (the image border & the GeologyHub logo).

A special thanks to the EarthquakeSim YouTube channel for granting me permission to use clips of his footage!
Video Sources from the EarthquakeSim YouTube channel:
[1]    • 3D KITCHEN: 10 Earthquake Levels!  
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Sources/Citations:
[1] U.S. Geological Survey

0:00 Nebraska Earthquake
1:06 Fault Line Type
1:51 Ancient Buried Orogeny
3:23 Regional Seismicity
3:53 Aftershock Odds