{{short description|Mountain range in Alaska}} {{Use American English|date=February 2026}} {{Use mdy dates|date=September 2011}} {{Infobox mountain range | name = Endicott Mountains | image = Endicott-mountains-Alaska-1901-USGS.jpg | image_caption = Endicott Mountains looking south, 1901 | country = United States | region = Alaska | borders_on = | length_mi = 151 | length_orientation = East-west | width_mi = 70 | width_orientation = North-south <!-- *** Locations *** --> | location = center of range | range_coordinates = {{coord|68|22|N|152|18|W|type:mountain|format=dms|display=inline,title}} | highest = Mount Kiev | elevation_ft = 7775 | coordinates = {{coord|68|19|52|N|149|32|49|W|type:mountain|format=dms|display=inline}} | geology = | age = | orogeny = | map = | map_caption = }} The '''Endicott Mountains''' are a range of mountains, part of the Brooks Range in northern Alaska. They are located in the middle of the Brooks range and run some {{convert|151|mi|km|0}} east&ndash;west. To the east are the Philip Smith Mountains and to the west are the Schwatka Mountains. The Endicott Mountains are separated from the Philip Smith Mountains by the Middle Fork of the Koyukuk River, the Dalton Highway, and Atigun Pass. The Endicott Mountains are separated from the Schwatka Mountains by Walker Lake, the upper reaches of the West Fork of the Kobuk River (Kaluluktok Creek), Akabluak Pass, and the Noatak River. The Endicott Mountains are separated from the mountains north of the Schwatka by Lucky Six Creek, Gull Pass, Gull Creek, a portion of the Alatna River and the Killik River.

From south to north the Endicott Mountains present long, broad glaciated valleys with rounded hills between rising in the center of the range to steep tors and aretes. The northern slopes of the Endicotts are steeper and more heavily incised, before they give way to the Arctic Coastal Plain.

==Peaks== Peaks in the Endicott Mountains include the Arrigetch Peaks, and highest to lowest:<ref>These peaks may all be found at [http://www.peakbagger.com/search.aspx Peakbagger.com] as well as on the Chandler Lake, Killik River, Survey Pass and Wiseman topographic maps of the United States Geological Survey.</ref> {| | *Mount Kiev at {{convert|7775|ft|m|0}} *Thibedeau Mountain at {{convert|7539|ft|m|0}} *Mount Doonerak at {{convert|7457|ft|m|0}} *Cockedhat Mountain at {{convert|7410|ft|m|0}} *Caliban at {{convert|7181|ft|m|0}} *Xanadu at {{convert|7160|ft|m|0}} *Fan Mountain at {{convert|7090|ft|m|0}} *Dan Peak at {{convert|7055|ft|m|0}} | *Wichmann Tower at {{convert|6916|ft|m|0}} *Mount MacVicar at {{convert|6693|ft|m|0}} *Ariel Peak at {{convert|6685|ft|m|0}} *Boreal Mountain at {{convert|6654|ft|m|0}} *Mount Arthur Emmons at {{convert|6556|ft|m|0}} *Rumbling Mountain at {{convert|6510|ft|m|0}} *Iniakuk Peak at {{convert|6490|ft|m|0}} *Mount Stuver at {{convert|6286|ft|m|0}} | *Mayukuit Mountain at {{convert|6240|ft|m|0}} *Sillyasheen Mountain at {{convert|6188|ft|m|0}} *Bluecloud Mountain at {{convert|5903|ft|m|0}} *Gray Mountain at {{convert|5783|ft|m|0}} *Sirr Mountain at {{convert|5712|ft|m|0}} *Frigid Crags at {{convert|5501|ft|m|0}} *Plateau Mountain at {{convert|5322|ft|m|0}} *Natat Mountain at {{convert|5141|ft|m|0}} |} as well as a number of unnamed peaks over 7000&nbsp;ft.

==Geology== Above the crystalline basement PreCambrian and Paleozoic sediments that have undergone partial metamorphosis . Above these are middle Cambrian sediments and the well documented Kanayuk Conglomerate.<ref>Nilsen, T. H. and Moore, T. E. (1982) "Sedimentology and Stratigraphy of the Kanayuk Conglomerate, Central and Western Brooks Range, Alaska—Report of the 1981 Field Season" United States Geological Survey Open file Report OF 82–674</ref><ref>Nilsen, T. H. and Moore, T. E. (1984) "Stratigraphic Nomenclature for the Upper Devonian and Lower Mississippian(?) Kanayuk Conglomerate, Brooks Range, Alaska" ''U.S. Geological Survey Bulletin'' 1529-A, pp. Al-A64</ref><ref>Nilsen, T. H.; Moore, T. E.; Balin, D. F. and Johnson, S. Y. (1982) "Sedimentology and Stratigraphy of the Kanayut Conglomerate, Central Brooks Range, Alaska—Report of 1980 Field Season" United States Geological Survey Open file Report OF 82–199</ref><ref>Nilsen, T. H.; Moore, T. E.; Brosgé, W. P. and Dutro, J. T., Jr. (1981) "Sedimentology and Stratigraphy of the Kanayut Conglomerate and Associated Units, Brooks Range, Alaska: Report of the 1981 Field Season" United States Geological Survey Open file Report OF 81–506</ref><ref>Nilsen, T. H.; Moore, T. E.; Dutro, J. T., Jr.; Brosgé, W. P. and Orchard, D. M. (1980) "Sedimentology and Stratigraphy of the Kanayuk Conglomerate and Associated Units, Central and Eastern Brooks Range, Alaska: Report of the 1978 Field Season" United States Geological Survey Open file Report OF 80–888</ref><ref name="Harris">Harris, Ann G. ''et al.'' (2004) ''Geology of National Parks'' (6th edition) Kendall/Hunt Publishing Company, Dubuque, Iowa, [https://books.google.com/books?id=Xr7v7GNmHs0C&pg=PA375&lpg=PA380 page 380], {{ISBN|0-7872-9971-5}}</ref> The Kanayuk Conglomerate is a fluvial deposit, made by a river in its flood plain, and can be up to {{convert|8000|ft|m}} thick.<ref name="Harris" /> The Kanayuk Conglomerate began to be deposited in the Devonian and continued through into the Mississippian (early Carboniferous).<ref name="Harris" /> It is believed to have formed a huge delta almost {{convert|500|mi|km}} long and {{convert|30|mi|km}} wide.<ref name="Harris" />

==Notes== {{Reflist}}

==Further reading== *Handschy, James William (1989) [http://scholarship.rice.edu/bitstream/handle/1911/16238/9012807.PDF ''Sedimentology and structural geology of the Endicott Mountains allochthon, central Brooks Range, Alaska''] PhD Thesis, Rice University, [http://scholarship.rice.edu/handle/1911/16238 Abstract]

==External links== * [http://www.peakbagger.com/range.aspx?rid=1004 "Endicott Mountains"] from Peakbagger.com

Category:Brooks Range Category:Gates of the Arctic National Park and Preserve Category:Landforms of Yukon–Koyukuk Census Area, Alaska Category:Mountains of Northwest Arctic Borough, Alaska Category:Mountains of Unorganized Borough, Alaska