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danger. 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. Due to its temperate climate and proximity to the Pacific Ocean, areas west of the Cascade
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period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris. The U-shaped cross section of the river valleys is a result of recent glaciation.
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The Big Bosom Buttes were named by geologist
Rowland Tabor, who with Doug McKeever, made the first ascent of the south butte in 1967. Surveyors made a helicopter landing on the north butte prior to 1955, but the
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Crest very rarely experience temperatures below 0 °F (−18 °C) or above 80 °F (27 °C). The months July through
September offer the most favorable weather for viewing or climbing this peak.
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435:. Geological events occurring many years ago created the diverse topography and drastic elevation changes over the Cascade Range leading to the various climate differences.
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in combination with glaciation have been the dominant processes which have created the tall peaks and deep valleys of the North
Cascades area.
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The butte is made up of volcanic breccia of the
Hannegan Pass Volcanics. The North Cascades features some of the most rugged topography in the
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The history of the formation of the
Cascade Mountains dates back millions of years ago to the late
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is significant as the summit rises 3,900 feet (1,200 meters) above the creek in one mile.
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of the north butte was made
September 28, 1984, by John Roper and Mark Allaback.
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from this mountain drains into
Silesia Creek, which is a tributary of the
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Cascade Alpine Guide: Climbing and High Routes Rainy Pass to Fraser River
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is set 2.5 mi (4.0 km) to the northeast. Precipitation
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originating in the
Pacific Ocean travel northeast toward the
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is a 6,384-foot (1,946-metre) mountain summit located in
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520:North Big Bosom Butte (furthest left) seen from
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16:Mountain in Washington (state), United States
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706:The Natural History of Puget Sound Country
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188:North Big Bosom Butte (the United States)
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590:"Big Bosom Butte-North Peak, Washington"
390:North Big Bosom Butte is located in the
337:. It is situated 2.5 miles south of the
756:Mountains of Whatcom County, Washington
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394:climate zone of western North America.
766:Mount Baker-Snoqualmie National Forest
458:. In addition, small fragments of the
347:Mount Baker-Snoqualmie National Forest
353:is three miles to the northwest, and
329:North Big Bosom Butte is part of the
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776:North Cascades of Washington (state)
643:, 2008, Mountaineers Books, page 57.
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431:with craggy peaks, ridges, and deep
617:"North Big Bosom Butte - 6,384' WA"
456:its own surrounding extinct caldera
508:West aspect viewed from Twin Lakes
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708:. University of Washington Press.
33:North Big Bosom Butte, circa 1966
556:Geology of the Pacific Northwest
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69:South Big Bosom Butte (6,521 ft)
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751:Mountains of Washington (state)
728:South Big Bosom Butte (photo):
722:North Big Bosom Butte (photo):
561:Geography of the North Cascades
158:Show map of Washington (state)
1:
781:North American 1000 m summits
191:Show map of the United States
474:about 50 million years ago.
49:6,384 ft (1,946 m)
704:Kruckeberg, Arthur (1991).
339:Canada–United States border
333:, which is a subset of the
79:0.58 mi (0.93 km)
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452:volcanic igneous activity
402:. As fronts approach the
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454:persisted. The peak has
107:48.959511°N 121.587968°W
59:824 ft (251 m)
464:continental lithosphere
343:Mount Baker Wilderness
234:Mount Baker Wilderness
155:Location in Washington
112:48.959511; -121.587968
345:, on land managed by
311:North Big Bosom Butte
182:North Big Bosom Butte
149:North Big Bosom Butte
22:North Big Bosom Butte
735:Mt. Baker Wilderness
668:Cascade Alpine Guide
444:North American Plate
737:U.S. Forest Service
230:Protected area
103: /
673:Mountaineers Books
412:maritime influence
367:Topographic relief
39:Highest point
786:Cascade Volcanoes
400:Cascade Mountains
392:marine west coast
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671:(3rd ed.).
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472:North Cascades
450:, episodes of
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404:North Cascades
396:Weather fronts
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351:Mount Larrabee
335:North Cascades
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315:Whatcom County
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624:. Retrieved
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597:. Retrieved
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470:created the
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380:first ascent
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331:Skagit Range
328:
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300:First ascent
283:Type of rock
271:Mount Sefrit
270:
256:Skagit Range
242:Parent range
479:Pleistocene
477:During the
355:Pocket Peak
325:Description
110: /
98:121°35′17″W
85:Coordinates
65:Parent peak
745:Categories
626:2021-11-04
599:2021-11-04
567:References
319:Washington
214:Washington
95:48°57′34″N
55:Prominence
416:avalanche
123:Geography
75:Isolation
45:Elevation
665:(2008).
530:See also
488:faulting
468:terranes
294:Climbing
263:Topo map
494:Gallery
466:called
460:oceanic
423:Geology
386:Climate
373:History
341:in the
321:state.
288:breccia
277:Geology
224:Whatcom
202:Country
730:Flickr
724:Flickr
484:Uplift
440:Eocene
359:runoff
220:County
210:State
686:USGS
486:and
462:and
304:1984
268:USGS
317:of
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692:^
648:^
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608:^
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602:.
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