Plummer Mountain | |
---|---|
Highest point | |
Elevation | 7,870 ft (2,399 m) [1] |
Prominence | 1,950 ft (594 m) [1] |
Parent peak | Chiwawa Mountain (8,459 ft) [2] |
Isolation | 3.14 mi (5.05 km) [2] |
Coordinates | 48°12′25″N120°58′19″W / 48.2069287°N 120.9719672°W [3] |
Geography | |
Country | United States |
State | Washington |
County | Snohomish |
Protected area | Glacier Peak Wilderness |
Parent range | Cascade Range North Cascades |
Topo map | USGS Suiattle Pass |
Geology | |
Age of rock | Cretaceous |
Mountain type | Metamorphic brown Gneiss |
Climbing | |
Easiest route | Scrambling |
Plummer Mountain is a prominent summit of the North Cascades, in Snohomish County of Washington state. [3] It is located west of Suiattle Pass in the heart of the Glacier Peak Wilderness on land managed by Mount Baker-Snoqualmie National Forest. Plummer Mountain is the high point and eastern culmination of Miners Ridge. Image Lake on Miners Ridge provides a campsite from which to climb Plummer. Kennecott Copper Corporation, as of 1988, planned to dig an open-pit copper mine on the slopes of Plummer Mountain. However, protests by various advocacy groups prevented the plan from developing further. [4]
Subduction and tectonic activity in the area began during the late cretaceous period, about 90 million years ago. The area was previously an oceanic environment, consisting mainly of sedimentary and volcanic rocks. [5] Extensive volcanic activity began to take place in the oligocene, about 35 million years ago. [6] However, mountain building in the area did not begin until the miocene, approximately 10 million years ago. [5] Plummer Mountain is located in the Cloudy Pass batholith, an intrusive formation that was formed approximately 20 million years ago, during the early miocene. [5] Glacier Peak, a stratovolcano that is south of Plummer Mountain, began forming in the mid-Pleistocene. [5] Due to Glacier Peak's proximity to Plummer Mountain, volcanic ash is quite common in the area.
Throughout the ice age, the North Cascades were mostly covered in thick glaciers, extending to near Puget Sound. Glaciation was most prevalent approximately 18,000 years ago, and most valleys were ice-free by 12,000 years ago. [5] As a result, valleys in the area are deep and U-shaped, and mountains tend to be rocky, with steep slopes and narrow summits.
Plummer Mountain is located in the marine west coast climate zone of western North America. [5] Most 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. [5] Because of maritime influence, snow tends to be wet and heavy, resulting in high avalanche danger. [5] 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. [5] 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). [5]
The trail to Miners Ridge can be accessed from the Suiattle River Road. There is an alpine route with scrambling that leads from Miners Ridge to Plummer Mountain.
Whatcom Peak is in North Cascades National Park in the U.S. state of Washington. Whatcom Peak is .50 mi (0.80 km) north of Challenger Glacier and the Whatcom Glacier descends from the northeast slopes of the peak. An unnamed hanging glacier descends along the northwest flank of the peak. This mountain is set between Mount Challenger and Easy Peak.
Mesahchie Peak is in North Cascades National Park in the U.S. state of Washington. Mesahchie Peak is named after the Chinook word for wicked. Mesahchie Peak is the highest summit along a ridge known as Ragged Ridge and is only .25 mi (0.40 km) east of Katsuk Peak. Both the Katsuk and Mesahchie Glaciers descended down the northwest and northeast flanks of the peak respectively.
Azurite Peak is an 8,434-foot (2,571-metre) double-summit mountain located at the common boundary point of Okanogan County, Skagit County, and Whatcom County in Washington state. It is part of the Okanogan Range which is a sub-range of the North Cascades Range. Azurite Peak ranks as the 81st-highest summit in the state. Azurite Peak is situated north of Azurite Pass on land administered by the Okanogan–Wenatchee National Forest. The nearest higher neighbor is Tower Mountain, 5.24 miles (8.43 km) to the south-southeast, and Mount Ballard lies 1.97 miles (3.17 km) to the north. Remnants of a small pocket glacier are found on the east aspect. Precipitation runoff from the peak drains north into tributaries of the Skagit River, and south into the Methow River. Topographic relief is significant as the summit rises over 3,000 feet above Mill Creek in one mile (1.6 km). The Pacific Crest Trail traverses the base of Azurite Peak.
Mount Misch is a remote 7,435 ft mountain summit in the North Cascades, in Skagit County of Washington state. It is the highest point of the Buckindy Range, or Buckindy Ridge. It is located 19 miles east-northeast of Darrington, Washington, and 15 miles north-northwest of Glacier Peak which is one of the Cascade stratovolcanoes. It is situated in the Glacier Peak Wilderness on land administered by the Mount Baker-Snoqualmie National Forest. Mount Misch was named by mountaineer and author Fred Beckey for his friend Peter Misch (1909-1987), University of Washington geology professor and mountaineer, who was renowned for his study of the North Cascades. Precipitation runoff from Mount Misch and the unnamed Goat Creek glacier on its east slope drains into tributaries of the Suiattle River and ultimately the Skagit River.
Sitting Bull Mountain is a 7,759-foot (2,365-metre) double summit mountain in the North Cascades of Washington state. The north summit is higher than the south peak, and easier to climb, however neither peak sees much climbing activity. Sitting Bull Mountain is located 2.1 mi (3.4 km) northwest of Suiattle Pass in the heart of the Glacier Peak Wilderness. Its nearest higher peak is Plummer Mountain, 1.51 mi (2.43 km) to the south-southwest. The mountain is situated on the crest of the Cascade Range, on the shared border of Snohomish County and Chelan County. Precipitation runoff from Sitting Bull Mountain drains east into Agnes Creek which is a tributary of the Stehekin River, or west into Canyon Creek which is a tributary of the Suiattle River.
Dumbell Mountain is an 8,421-foot (2,567-metre) double summit massif located in the Glacier Peak Wilderness of the North Cascades, in Chelan County of Washington state. The Dumbell summit is slightly higher than the northeast subpeak (8,415 ft) which is unofficially called Greenwood Mountain. Its nearest higher neighbor is Chiwawa Mountain, 2.4 mi (3.9 km) to the east-southeast. Precipitation runoff from Dumbell Mountain drains into tributaries of the Chelan River and the Wenatchee River. The mountain's descriptive name was applied by Albert Hale Sylvester (1871-1944), a pioneer surveyor, explorer, topographer, and forest supervisor in the Cascades.
Chiwawa Mountain is an 8,459-foot (2,578-metre) mountain summit located in the Glacier Peak Wilderness of the North Cascades in Washington state. The mountain is situated on the crest of the Cascade Range, on the shared border of Snohomish County and Chelan County, also straddling the boundary between the Mount Baker-Snoqualmie National Forest and the Wenatchee National Forest. Its nearest higher peak is Fortress Mountain, 1.12 mi (1.80 km) to the west. Chiwawa Mountain is a triple divide peak, so precipitation runoff from it drains northeast to Lake Chelan via Railroad Creek; northwest into Miners Creek which is a tributary of the Suiattle River; and south into the Chiwawa River headwaters. The mountain's name is taken from the river's name, which was applied by Albert Hale Sylvester (1871-1944), a pioneer surveyor, explorer, topographer, and forest supervisor in the Cascades. Chiwawa comes from the Columbia-Moses language and means a kind of creek.
Kololo Peaks is an 8,200+ ft mountain located in the Glacier Peak Wilderness of the North Cascades in Washington state. The mountain is situated on the crest of the Cascade Range, on the shared border of Snohomish County and Chelan County, and also straddling the boundary between Mount Baker-Snoqualmie National Forest and Wenatchee National Forest. The nearest higher peak is Glacier Peak, 3.29 mi (5.29 km) to the north. Precipitation runoff and meltwater from the White River Glacier on the southeast slope drains into White River. On the west slope, the White Chuck Glacier drains into the White Chuck River, and the Suiattle Glacier and Honeycomb Glacier on the north and east sides drain into the Suiattle River. Surrounded by these glaciers, Fred Beckey in his Cascade Alpine Guide describes the mountain as being almost a nunatak.
Luahna Peak is an 8,445-foot (2,574-metre) double summit mountain located in the Glacier Peak Wilderness of the North Cascades in Washington state. The true summit is 8,445 feet in elevation, and the northwest subpeak is 8,369 feet. The mountain is situated in Chelan County, in the Wenatchee National Forest. Luahna Peak is the second highest in the Dakobed Range after Clark Mountain which is 1.04 mi (1.67 km) to the southeast, and Luahna lies 6.95 mi (11.18 km) southeast of Glacier Peak. The Richardson Glacier lies to the southeast of the summit, with the Pilz Glacier and Butterfly Glacier stretching across the northern slope. Precipitation runoff from the peak drains into the White River and Napeequa River, both tributaries of the Wenatchee River. The first ascent of the summit was made on August 13, 1911, by Rodney Glisan, H.H. Prouty, Winthrop Stone, C.W. Whittlesey, all of whom were members of the Mazamas.
Cloudy Peak is a 7,915-foot (2,412-metre) mountain summit located in the Glacier Peak Wilderness of the North Cascades, in Chelan County of Washington state. Its nearest higher peak is North Star Mountain, 0.67 mi (1.08 km) to the northeast. Precipitation runoff from Cloudy Peak drains into Agnes Creek and Railroad Creek, both tributaries of the Chelan River.
Napeequa Peak is an 8,073-foot (2,461-metre) pyramidal mountain summit located in the Glacier Peak Wilderness of the North Cascades in Washington state. The mountain is situated on the crest of the Cascade Range, on the shared border of Snohomish County and Chelan County, also straddling the boundary between the Mount Baker-Snoqualmie National Forest and the Wenatchee National Forest. Its nearest neighbor is Cirque Mountain, 0.3 mi (0.48 km) to the north, and the nearest higher peak is Buck Mountain, 2.56 mi (4.12 km) to the east-southeast. Precipitation runoff from the peak drains east to the headwaters of Napeequa River; or west into the Suiattle River. The mountain's name is taken from the river's name, which was applied by Albert Hale Sylvester (1871-1944), a pioneer surveyor, explorer, topographer, and forest supervisor in the Cascades.
Brahma Peak is a remote 8,078-foot (2,462-metre) mountain summit located on Chiwawa Ridge in the North Cascades, in Chelan County of Washington state. The mountain is situated in the Glacier Peak Wilderness, on land managed by the Wenatchee National Forest. Its nearest higher neighbor is Buck Mountain, 1.8 mi (2.9 km) to the north. Brahma and Buck are set on Chiwawa Ridge, and other notable peaks on this ridge include Fortress Mountain, Cirque Mountain, Napeequa Peak, Mount Berge, Bandit Peak, and Chiwawa Mountain. Precipitation runoff from Brahma and meltwater from its glacier remnants drains into Chiwawa River and Napeequa River, both tributaries of the Wenatchee River. Topographic relief is significant since the southwest lavender-colored schist cliffs of this peak rise nearly 4,000 feet above the Napeequa River Valley in approximately one mile.
Emerald Peak is an 8,422-foot-elevation (2,567-meter) mountain summit located in the Chelan Mountains, in Chelan County of Washington state.
Mount Arriva is an 8,215 ft (2,500 m) elevation mountain summit located in the North Cascades in the U.S. state of Washington. It is situated in North Cascades National Park, on the shared border of Chelan County and Skagit County. Despite its position only 1.55 mi (2.49 km) southwest of Easy Pass, and 3.7 mi (6.0 km) west of the North Cascades Highway, it is not visible from either. Its nearest higher peak is Black Peak, 2.57 mi (4.14 km) to the southeast. Mount Arriva has a secondary summit, called East Peak, which was first climbed in August 1940 by Fred Beckey, Jim Crooks, and Ed Kennedy. The first ascent of the true summit was made July 6, 1966, by Joe and Joan Firey, John and Irene Meulemans.
Cirque Mountain is a 7,966-foot (2,428-metre) mountain summit located in the Glacier Peak Wilderness of the North Cascades in Washington state. The mountain is situated on the crest of the Cascade Range, on the shared border of Snohomish County and Chelan County, also straddling the boundary between the Mount Baker-Snoqualmie National Forest and the Wenatchee National Forest. Its nearest higher peak is Napeequa Peak, 0.3 mi (0.48 km) to the south. The peak is set on Chiwawa Ridge with Napeequa, and other notable peaks on this ridge include Fortress Mountain, Buck Mountain, Brahma Peak, Mount Berge, and Chiwawa Mountain. Topographic relief is significant since the western aspect of the mountain rises 4,000 feet above the Suiattle Valley in approximately 1.5 mi (2.4 km). This mountain has small, unnamed, hanging glaciers in cirques surrounding the summit. Precipitation runoff from the peak and meltwater from the glaciers drains east to the headwaters of Napeequa River; or west into the Suiattle River.
Tenpeak Mountain is an 8,312-foot (2,533-metre) mountain summit located in the Glacier Peak Wilderness of the North Cascades in Washington state. Tenpeak is situated on the crest of the Cascade Range, on the shared border of Snohomish County and Chelan County, also straddling the boundary between the Mount Baker-Snoqualmie National Forest and the Wenatchee National Forest. Its nearest higher neighbor is Luahna Peak, 2.5 mi (4.0 km) to the southeast. Topographic relief is significant since the northern aspect of the mountain rises 4,200 feet above the Suiattle Valley in approximately 1.5 mi (2.4 km). This mountain has small, unnamed, hanging glaciers in cirques surrounding the summit, and the terminus of the Honeycomb Glacier lies below the western base of the mountain. Precipitation runoff from the mountain and meltwater from the glaciers drains south into White River; or north into the Suiattle River. This mountain's descriptive name was suggested by The Mountaineers, and was officially adopted in 1918 by the U.S. Board on Geographic Names. The first ascent was made September 21, 1940, by Lloyd Anderson and Tom Campbell.
Mount Berge is a 7,951-foot (2,423-metre) double-summit granitic mountain located in the Glacier Peak Wilderness of the North Cascades, in Chelan County of Washington state. The mountain is situated along the crest of the Cascade Range, on land managed by the Okanogan–Wenatchee National Forest. Its nearest higher neighbor is Napeequa Peak, 1.2 mi (1.9 km) to the west, and Buck Mountain is 1.7 mi (2.7 km) to the east-southeast. Berge is positioned on Chiwawa Ridge with Buck and Napeequa, and other notable peaks on this ridge include Fortress Mountain, Brahma Peak, Cirque Mountain, Helmet Butte, and Chiwawa Mountain. Precipitation runoff from Berge drains to the headwaters of Napeequa River; or east into tributaries of the Chiwawa River.
Le Conte Mountain is a 7,762-foot-elevation (2,366-meter) summit located on the shared boundary of Skagit County and Chelan County in Washington state. It is positioned on the crest of the North Cascades Range, and is set within the Glacier Peak Wilderness. Le Conte Mountain is situated on the shared border of Mount Baker-Snoqualmie National Forest and Okanogan-Wenatchee National Forest. Access to the peak is via the Ptarmigan Traverse. The nearest higher neighbor is Sentinel Peak, 1.87 miles (3.01 km) to the south-southeast, and Spider Mountain is 2.4 miles (3.9 km) to the northeast. The Le Conte Glacier and South Cascade Glacier lie to the south of the peak. Precipitation runoff on the east side the mountain drains into Flat Creek which is a tributary of the Stehekin River, while precipitation drains into headwaters of the South Fork Cascade River from the west side. Topographic relief is significant as the southwest aspect rises nearly 2,500 feet above South Cascade Lake in less than one-half mile, and the northeast aspect rises 3,200 feet above Flat Creek in one mile.
Mount Buckindy is a remote 7,320-foot-elevation (2,230-meter) mountain summit located in the North Cascades, in Skagit County of Washington state. It is the second-highest point of the Buckindy Range, or Buckindy Ridge. It is set in the Glacier Peak Wilderness on land managed by the Mount Baker-Snoqualmie National Forest. It is situated 20 miles east-northeast of Darrington, Washington, and 17 miles north-northwest of Glacier Peak which is one of the Cascade stratovolcanoes. Precipitation runoff from Mount Buckindy drains south to the Suiattle River via Buck Creek and Downey Creek, and north to the Cascade River via Kindy Creek. Topographic relief is significant as the summit rises 4,700 feet above Kindy Creek in less than two miles. The mountain's toponym is a portmanteau of Buck and Kindy Creeks, and has been officially adopted by the United States Board on Geographic Names.
Helmet Butte is a 7,400-foot (2,256-metre) summit located in the Glacier Peak Wilderness of the North Cascades in Washington state.