Chiwaukum Mountains

Chiwaukum Mountains
Chiwaukum Mountains
Range
The Chiwaukum Mountains (left and center skyline), looking south southeast, with Big Chiwaukum (8081 feet, 2463 m), the highest point
Country United States
State Washington
District Wenatchee National Forest
Range Wenatchee Mountains
Highest point Big Chiwaukum
 - elevation 2,463 m (8,081 ft)
 - coordinates 47°42′05″N 120°56′02″W / 47.70139°N 120.93389°W / 47.70139; -120.93389
Geology schist
Period Cretaceous

The Chiwaukum Mountains are a north-south mountain range in central Washington, USA. They stretch from Snowgrass Mountain at 47°41′N 120°56′W / 47.683°N 120.933°W / 47.683; -120.933, to 47°45′N 120°54′W / 47.75°N 120.9°W / 47.75; -120.9.

The mountains are made of schist, part of the Nason terrane. The original rock in the Nason terrane was laid down 210 Myr ago. The terrane then smashed into the western coastline of the continent, and the Mount Stuart batholith intruded into it in the late Cretaceous. The intrusion of the granitic rock metamorphosed the rock into schist. [1].

Partial list of peaks:

  • Big Chiwaukum - 8,081' (2463m)
  • Snowgrass Mountain - 7,993' (2436m)
  • Big Jim Mountain - 7,765' (2367m)

Nearby peaks:

  • Jim Hill Mountain - 6,765' (2062m)
  • Cowboy Mountain - 5,853' (1784m)

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