Fault Gouge
By Earthquake Hazards Program
2021 (approx.)
![Photo of a rock outcrop with cracks with a pen placed for scale](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/Fault-Gouge_0.jpg?itok=uN-cZUDy)
Detailed Description
Photo of fault gouge. Fault gouge is crushed and ground-up rock produced by friction between the two sides when a fault moves.