Английская Википедия:Indian Head Peak
Шаблон:Short description Шаблон:Distinguish Шаблон:Infobox mountain
Indian Head Peak is a prominent Шаблон:Convert mountain summit located in the Glacier Peak Wilderness, in the North Cascades of Washington state.[1] The mountain is situated in Chelan County, on land managed by the Okanogan–Wenatchee National Forest. Its nearest higher neighbor is Kololo Peaks, Шаблон:Convert to the north. Indian Head Peak is the second-highest point on Wenatchee Ridge, a subrange which also includes Mount Saul, Whittier Peak, and Mount David.[2] Precipitation runoff from it drains into Indian Creek and White River, tributaries of the Wenatchee River.
The mountain's name was given by Albert Hale Sylvester (1871–1944), for its resemblance to an "Indian's headdress" when viewed from the south, near Kodak Peak. Sylvester was a pioneer surveyor, explorer, topographer, and forest supervisor in the Cascades. Indian Head Peak was first climbed on July 2, 1870 by railroad surveyors D. C. Linsley and John A. Tennant.[3]
Climate
Indian Head Peak is located in the marine west coast climate zone of western North America.[4] 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.[4] Because of maritime influence, snow tends to be wet and heavy, resulting in high avalanche danger.[4] Due to its temperate climate and proximity to the Pacific Ocean, areas west of the Cascade Crest very rarely experience temperatures below Шаблон:Convert or above Шаблон:Convert.[4] 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.[4] The months July through September offer the most favorable weather for viewing or climbing this peak.
Geology
The North Cascades feature 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.
The history of the formation of the Cascade Mountains dates back millions of years ago to the late Eocene Epoch.[5] With the North American Plate overriding the Pacific Plate, episodes of volcanic igneous activity persisted.[5] Glacier Peak, a stratovolcano that is Шаблон:Convert north of Indian Head Peak, began forming in the mid-Pleistocene.[4] Due to Glacier Peak's proximity to Indian Head Peak, volcanic ash is common in the area. In addition, small fragments of the oceanic and continental lithosphere called terranes created the North Cascades about 50 million years ago.[5]
During the Pleistocene period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris.[5] 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
External links
- Weather forecast: Indian Head Peak
- Английская Википедия
- Страницы с неработающими файловыми ссылками
- Mountains of Washington (state)
- Mountains of Chelan County, Washington
- Cascade Range
- North Cascades
- North American 2000 m summits
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