Mount Logan (Washington)
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Mount Logan () is located in
North Cascades National Park North Cascades National Park is an American national park in the state of Washington. At more than , it is the largest of the three National Park Service units that comprise the North Cascades National Park Complex. North Cascades National Par ...
in the U.S. state of Washington. Mount Logan is in a remote location of North Cascades National Park that requires hiking from a trailhead to reach the peak. The mountain itself is not a difficult climb, though the easiest approaches require traversing glaciers and ropes are recommended.Smoot pp. 93ā€“97 The peak supports three glaciers including
Banded Glacier Banded Glacier is located on the north slopes of Mount Logan, North Cascades National Park in the U.S. state of Washington. The glacier is approximately long and flows down from just east of the summit of Mount Logan to an elevation of approximat ...
to the north, Fremont Glacier to the southwest and Douglas Glacier on the southeast slopes.


Climate

Mount Logan is located in the marine west coast climate zone of western
North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...
.Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Seattle, WA: Mountaineers Books, 2008. 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. Due to its temperate climate and proximity to the Pacific Ocean, areas west of the Cascade Crest very rarely experience temperatures below or above . 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. Because of maritime influence, snow tends to be wet and heavy, resulting in high avalanche danger.


Geology

The North Cascades features some of the most rugged topography in the
Cascade Range The Cascade Range or Cascades is a major mountain range of western North America, extending from southern British Columbia through Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as the North Cascades, ...
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. These climate differences lead to vegetation variety defining the ecoregions in this area. The history of the formation of the Cascade Mountains dates back millions of years ago to the late Eocene Epoch. With the North American Plate overriding the
Pacific Plate The Pacific Plate is an oceanic tectonic plate that lies beneath the Pacific Ocean. At , it is the largest tectonic plate. The plate first came into existence 190 million years ago, at the triple junction between the Farallon, Phoenix, and Iza ...
, episodes of volcanic igneous activity persisted. In addition, small fragments of the oceanic and continental lithosphere called terranes created the North Cascades about 50 million years ago. During the Pleistocene period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris. The ā€œUā€-shaped cross section of the river valleys are a result of recent glaciation.
Uplift Uplift may refer to: Science * Geologic uplift, a geological process ** Tectonic uplift, a geological process * Stellar uplift, the theoretical prospect of moving a stellar mass * Uplift mountains * Llano Uplift * Nemaha Uplift Business * Uplif ...
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.


References

;Sources


Gallery

File:Mount Logan of North Cascades.jpg, Logan seen from Diablo Lake File:Douglas Glacier on Mount Logan.jpeg, Douglas Glacier on Logan File:Mount Logan of North Cascades National Park.jpg, Logan seen from Boston-Sahale Col {{DEFAULTSORT:Logan Mountains of Washington (state) North Cascades National Park Mountains of Skagit County, Washington North Cascades Cascade Range