Geology
USGS Quaternary Faults & Folds — Alaska
Active and potentially active faults and folds from the USGS Quaternary Fault and Fold Database.
Why this data matters
- Alaska is the most seismically active U.S. state; fault data is critical for site assessment and hazard planning.
- Affects construction and claim viability.
Data source
| Field | Value |
|---|---|
| Agency | U.S. Geological Survey (USGS) |
| Coverage | Alaska |
Related layers
View this layer in the TrueTopo map
Open app.truetopo.com →