Mother Lode (Methow Mountains)

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Coordinates: 48°26′37″N 120°36′54″W / 48.443559°N 120.615132°W / 48.443559; -120.615132
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Mother Lode
North aspect, from Wallaby Peak
Highest point
Elevation7,905 ft (2,409 m)[1]
Prominence1,585 ft (483 m)[1]
Parent peakGilbert Mountain (8,023 ft)[2]
Isolation3.03 mi (4.88 km)[2]
Coordinates48°26′37″N 120°36′54″W / 48.443559°N 120.615132°W / 48.443559; -120.615132[1]
Naming
EtymologyMother lode
Geography
Mother Lode is located in Washington (state)
Mother Lode
Mother Lode
Location of Mother Lode in Washington
Mother Lode is located in the United States
Mother Lode
Mother Lode
Mother Lode (the United States)
CountryUnited States
State
class 4 scrambling[2]
North Ridge

Mother Lode is a 7,905-foot-elevation (2,409-meter) mountain summit located in the

Topographic relief is significant as the north aspect rises 3,500 feet (1,100 meters) above the South Fork Twisp River in one mile. The peak was climbed in 1983 by Rick La Belle and Glen Sterr via the north ridge, and the northeast ridge was climbed in 1985 by Carl and Gordon Skoog.[3] Precipitation runoff from the peak drains into tributaries of Twisp River, which in turn is a tributary of the Methow River
.

Climate

Weather fronts originating in the Pacific Ocean 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.[4] Because of maritime influence, snow tends to be wet and heavy, resulting in avalanche danger.[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]

Geology

Mother Lode Peak

The North Cascades features some of the most rugged topography in the

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

  1. ^ a b c d "Mother Lode Peak, Washington". Peakbagger.com.
  2. ^ a b c "Mother Lode WA - 7,905'". Lists of John. Retrieved 2021-09-27.
  3. ^ a b Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Volume 3, 2nd Edition, Mountaineers Books, 2000, page 281.
  4. ^ a b c Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Seattle, WA: Mountaineers Books, 2008.
  5. ^ a b c d Kruckeberg, Arthur (1991). The Natural History of Puget Sound Country. University of Washington Press.

External links

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