Geologic Studies on Sitkinak Island, Alaska
![Image: Geologic Studies on Sitkinak Island, Alaska](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/Sitkinak_USGS_2.jpg?itok=HbNI-lz0)
Detailed Description
Geologists examine an exposure of a tidal marsh bank on Sitkinak Island, Alaska. The bank exposes interbedded peat and silt that records sudden vertical land movements associated with megathrust fault slip during large earthquakes.
Sources/Usage
Public Domain.