Granite Mountain (Whatcom County, Washington)

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Granite Mountain
Granite Mtn North Cascades.jpg
Granite Mountain, southeast aspect
Highest point
Elevation6,692 ft (2,040 m) NAVD 88[1]
Prominence648 ft (198 m)[1]
Coordinates48°54′16″N 121°33′14″W / 48.904541°N 121.553763°W / 48.904541; -121.553763Coordinates: 48°54′16″N 121°33′14″W / 48.904541°N 121.553763°W / 48.904541; -121.553763[1]
Geography
Granite Mountain is located in Washington (state)
Granite Mountain
Granite Mountain
Location in Washington
Location
Parent rangeNorth Cascades
Topo mapUSGS Mount Sefrit
Climbing
Easiest routeScramble

Granite Mountain is a 6,692-foot (2,040-metre) mountain summit located in the Skagit Range, which is a subset of the North Cascades in Whatcom County of Washington state.[2] It is situated 1.7 mi (2.7 km) south of Mount Chardonnay, and 1.2 mi (1.9 km) northwest of Hannegan Peak in the Mount Baker Wilderness, which is managed by the Mount Baker-Snoqualmie National Forest. Precipitation runoff from the mountain drains into tributaries of the Fraser River and the Nooksack River.

Climate[]

Granite Mountain is located in the marine west coast climate zone of western North America.[3] Most weather fronts originate in the Pacific Ocean, and travel northeast toward the Cascade Mountains. As fronts approach the North Cascades, they are forced upward by the peaks of the Cascade Range (Orographic lift), causing them to drop their moisture in the form of rain or snowfall onto the Cascades. As a result, the west side of the North Cascades experiences high precipitation, especially during the winter months in the form of snowfall.[3] Due to its temperate climate and proximity to the Pacific Ocean, areas west of the Cascade Crest very rarely experience temperatures below 0 °F (−18 °C) or above 80 °F (27 °C).[3] During winter months, weather is usually cloudy, but, due to high pressure systems over the Pacific Ocean that intensify during summer months, there is often little or no cloud cover during the summer.[3] Because of maritime influence, snow tends to be wet and heavy, resulting in high avalanche danger.[3]

Geology[]

The North Cascades features some of the most rugged topography in the Cascade Range with craggy peaks, ridges, and deep glacial valleys. Geological events occurring many years ago created the diverse topography and drastic elevation changes over the Cascade Range leading to the various climate differences.

The history of the formation of the Cascade Mountains dates back millions of years ago to the late Eocene Epoch.[4] With the North American Plate overriding the Pacific Plate, episodes of volcanic igneous activity persisted.[4] In addition, small fragments of the oceanic and continental lithosphere called terranes created the North Cascades about 50 million years ago.[4]

During the Pleistocene period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris.[4] The U-shaped cross section of the river valleys are a result of recent glaciation. Uplift and faulting in combination with glaciation have been the dominant processes which have created the tall peaks and deep valleys of the North Cascades area.

See also[]

References[]

  1. ^ a b c "Granite Mountain, Washington". Peakbagger.com. Retrieved 2019-08-02.
  2. ^ "Granite Mountain". Geographic Names Information System. United States Geological Survey. Retrieved 2019-08-02.
  3. ^ a b c d e Beckey, Fred W. (2008). Cascade Alpine Guide (3rd ed.). Mountaineers Books.
  4. ^ a b c d Kruckeberg, Arthur (1991). The Natural History of Puget Sound Country. University of Washington Press.

External links[]

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