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The Chuckanut Mountains (from "Chuckanut", an Indian word meaning "long beach far from a narrow entrance"[1]), or Chuckanuts, are located on the northern Washington state coast of the Salish Sea, just south of Bellingham, Washington. Being a part of the Cascade Range, they are the only place where the Cascades come west down to meet the sea. The Chuckanuts are considered to be a part of the Puget Lowland Forest Ecoregion.

Fossils of Sabalites campbelli, extinct Palm leaves, in the Chuckanut Formation.
Fossils of Sabalites campbelli, extinct Palm leaves, in the Chuckanut Formation.
Chuckanut Mountain Looking east from Chuckanut Island
Chuckanut Mountain Looking east from Chuckanut Island

The range contains Larrabee State Park, the first State Park to be designated in Washington (1923). Its mountains include:


Geology


The Chuckanut Mountains were formed by the folding of the Chuckanut Formation (which is predominantly made up of layers of 55-million-year-old sandstone, conglomerate, shale, and bituminous and sub-bituminous coal) and the later Huntingdon Formation (predominantly shale and sandstone) on top, as well as an exposed section of pre-Jurassic-age phyllite.[2] The Chuckanuts are well known for their Tertiary Period leaf fossils.[3]

In 1988, an outcrop of metamorphic phyllite, green chert, and milk quartz on Blanchard Mountain was exposed by a construction crew. The outcrop is unique for its unusually large chunks of stilpnomelane.[4]


References


  1. "CHUCKANUT." Washington Place Names. Tacoma Public Library Online Digital Collections. Retrieved 23 March 2022. Archived from the original on 23 March 2022.
  2. "BP Cherry Point Cogeneration Project, Application for Site Certification" (PDF). Energy Facility Site Evaluation Council. Archived from the original (PDF) on 2006-09-25. Retrieved 2007-10-02.
  3. Sykes, Karen (21 March 2001). "Let mind and feet wander at lovely Squires Lake Park". Seattle Post-Intelligencer.
  4. George E. Mustoe (December 1998). "Stilpnomelane at Blanchard mountain, western Skagit County, Washington". Washington Geology. 26 (4): 3–8.



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[de] Chuckanut Mountains

Die Chuckanut Mountains („Chuckanut“ ist ein indianisches Wort für „langer Strand, weit weg von einem engen Eingang“[1]) oder Chuckanuts liegen im Norden des US-Bundesstaats Washington am Ufer der Salish Sea, gerade südlich von Bellingham. Sie sind Teil der Kaskadenkette und als solche der einzige Ort, an dem die Kette bis an die Küste reicht. Die Chuckanuts gelten als Teil der Ökoregion Puget Lowland Forest.
- [en] Chuckanut Mountains


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