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Monument Peak (Washington)

From Wikipedia, the free encyclopedia

Monument Peak
Monument Peak seen from Slate Peak
Highest point
Elevation8,597 ft (2,620 m) NAVD 88[1]
Prominence1,072 ft (327 m)[1]
Isolation2.46 mi (3.96 km)[2]
ListingList of Highest Mountain Peaks in Washington
Coordinates48°47′39″N 120°32′32″W / 48.794296°N 120.542267°W / 48.794296; -120.542267[1]
Geography
Monument Peak is located in Washington (state)
Monument Peak
Monument Peak
Location of Monument Peak in Washington
Monument Peak is located in the United States
Monument Peak
Monument Peak
Monument Peak (the United States)
Location
Parent rangeOkanogan Range
North Cascades
Cascade Range
Topo mapUSGS Mount Lago
Geology
Type of rockgranite[4]
Climbing
First ascent1978 by Fred Beckey, John Roper[3]
Easiest routeclass 3 scrambling[2]

Monument Peak[5] is an 8,597-foot (2,620-metre) mountain summit located in western Okanogan County in Washington state. It is part of the Okanogan Range which is a sub-range of the North Cascades. The mountain is situated in the Pasayten Wilderness, on land administered by the Okanogan–Wenatchee National Forest. The nearest higher peak is Mount Lago, 2.42 miles (3.89 km) to the north.[1] Precipitation runoff from Monument Peak drains east into Monument Creek, and west into Eureka Creek, which are both part of the Methow River drainage basin.

Climate

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, causing them to drop their moisture in the form of rain or snowfall onto the Cascades (Orographic lift). As a result, the west side of the North Cascades experiences high precipitation, especially during the winter months in the form of snowfall. 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]

Geology

The North Cascades features some of the most rugged topography in the Cascade Range with craggy peaks, spires, 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.

Blackcap Mountain (left) and Monument Peak from Slate Peak

The history of the formation of the Cascade Mountains dates back millions of years ago to the late Eocene Epoch.[6] With the North American Plate overriding the Pacific Plate, episodes of volcanic igneous activity persisted.[6] In addition, small fragments of the oceanic and continental lithosphere called terranes created the North Cascades about 50 million years ago.[6]

During the Pleistocene period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris.[6] The U-shaped cross section of the river valleys is 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 d "Monument Peak, Washington". Peakbagger.com.
  2. ^ a b "Monument Peak - 8,592' WA". listsofjohn.com. Retrieved 2021-11-03.
  3. ^ a b Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Seattle, WA: Mountaineers Books, 2008.
  4. ^ USGS.gov
  5. ^ "Monument Peak". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2019-06-17.
  6. ^ a b c d Kruckeberg, Arthur (1991). The Natural History of Puget Sound Country. University of Washington Press.

External links

This page was last edited on 6 January 2024, at 18:26
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