Bald Eagle Mountain Sackungen
Bald Eagle Mountain sackung. Image: US Geological Survey
The sackungen of Bald Eagle Mountain are notable because they are the location of a long-term study to decide whether scarps and trenches are the result of tectonic activity or gravitational spreading. Measurements over a period of twenty-two years record 8.3 cm of spreading during that period.
The full version of the report Measurement of ridge-spreading movements (Sackungen) at Bald Eagle Mountain is available from the USGS and contains many images and scientific diagrams of the geology of this feature.