Spencer Canyon fault
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| Spencer Canyon fault | |
|---|---|
  | |
| Etymology | Spencer Canyon (Columbia River) |
| Coordinates | 47°37′48″N 120°15′43″W / 47.630°N 120.262°W |
| Country | United States |
| Region | Chelan County, Central Washington |
| State | Washington |
| Characteristics | |
| Range | North Cascades |
| Length | 55 km (34 mi) |
| Tectonics | |
| Plate | North American |
| Status | Active |
| Earthquakes | 1872 North Cascades earthquake |
| Type | Thrust |
The Spencer Canyon fault is an active seismic fault in central Washington state. Discovered in 2014, it was identified following a multi-year investigation into the source of the 1872 North Cascades earthquake, which was widely felt across the Pacific Northwest.[1] In 2015, researchers who reported the discovery of the fault also identified the epicenter of the 1872 earthquake near the town of Chelan.[2]