{{Short description|Mountain in Canada}} {{Infobox mountain | name= Deltaform Mountain | image= Deltaform Mountain above larch.jpg | image_caption= Deltaform Mountain | elevation_m= 3424 | elevation_ref=<ref name=crdb/><ref name=otm>{{cite opentopomap|Deltaform Mountain|51.301667|-116.245278|2023-07-23}}</ref> | prominence_m= 822 | prominence_ref=<ref name=bivouac>{{cite bivouac|id= 1577|name=Deltaform Mountain|access-date= 2008-12-31}}</ref> | range= Bow Range | parent_peak= Hungabee Mountain (3492 m) | listing = {{ubl|Mountains of Alberta|Mountains of British Columbia}} | country= Canada | subdivision2_type= Provinces | subdivision2= {{hlist|Alberta|British Columbia}} | part_type = Protected area | part = {{ubl|Banff National Park|Kootenay National Park}} | map= Canada Alberta#Canada British Columbia#Canada | map_caption= Location in Alberta##Location in British Columbia##Location in Canada | map_size= 200 | label_position= left | mapframe = yes | mapframe-zoom = 8 | mapframe-caption = Interactive map of Deltaform Mountain | coordinates= {{coord|51|18|06|N|116|14|43|W|type:mountain_region:CA_scale:100000|format=dms|display=inline,title}} | coordinates_ref=<ref name=bcgnis/> | topo_map= NTS {{Canada NTS Map Sheet|82|N|8}}<ref name=bcgnis/> | first_ascent= 1 September 1903<br/>by A. Eggers, H.C. Parker, C. Kaufmann, and H. Kaufmann<ref name=bivouac/> | easiest_route= rock/snow climb }} '''Deltaform Mountain''' is one of the mountains in the Valley of the Ten Peaks, located on the Continental Divide on the border of British Columbia and Alberta, and also on the border between Banff and Kootenay National Parks in Canada. The mountain was originally named '''Saknowa''' by Samuel Allen but Walter Wilcox named it to its official title in 1897 as it resembles the Greek letter delta.<ref name=crdb>{{cite crdb|id= 365|name=Deltaform Mountain|access-date=2004-05-14}}</ref><ref name=bcgnis/>
Deltaform was first climbed in 1903 by August Eggers and Herschel Clifford Parker who were guided by Christian and Hans Kaufmann.<ref name=crdb/><ref name=bivouac/> __NOTOC__ ==Climbing routes== The two main climbing routes are:<ref name=crdb/> * North-West Ridge (Normal Route) II 5.5 * North Face, The Supercouloir IV 5.8
==Geology== Deltaform Mountain is composed of sedimentary rock laid down during the Precambrian to Jurassic periods.<ref>{{Belyea-Banff-NP}}</ref> Formed in shallow seas, this sedimentary rock was pushed east and over the top of younger rock during the Laramide orogeny.<ref name=gadd>{{cite book|title=Geology of the Rocky Mountains and Columbias |author=Gadd, Ben |year=2008}}</ref>
==Climate== Based on the Köppen climate classification, Deltaform is located in a subarctic climate with cold, snowy winters, and mild summers.<ref name=Peel2007/> Temperatures can drop below {{convert|−20|C|F|0}} with wind chill factors below {{convert|−30|C|F|0}}.
==Gallery== <gallery> File:Moraine Lake 17092005.jpg|Valley of the Ten Peaks and Moraine Lake, Banff National Park, Canada. Mountains from left to right: Tonsa (3057 m),<br/>Mount Perren (3051 m), Mount Allen (3310 m), Mount Tuzo (3246 m), Deltaform Mountain (3424 m), Neptuak Mountain (3233 m) </gallery>
==See also== *List of peaks on the Alberta–British Columbia border
== References == <references>
<ref name=bcgnis> {{cite bcgnis|id=13790|title=Deltaform Mountain|access-date=2016-07-28}}</ref> <ref name=Peel2007> {{cite journal | author = Peel, M. C. |author2=Finlayson, B. L. |author3=McMahon, T. A. | year = 2007 | title = Updated world map of the Köppen−Geiger climate classification | journal = Hydrol. Earth Syst. Sci. | volume = 11 | issue=5 | pages = 1633–1644 |doi=10.5194/hess-11-1633-2007 |doi-access=free |bibcode=2007HESS...11.1633P | issn = 1027-5606| url = https://hal.archives-ouvertes.fr/hal-00298818/file/hessd-4-439-2007.pdf }}</ref>
</references>
{{Canadian Rockies|state=collapsed}}
Category:Three-thousanders of Alberta Category:Three-thousanders of British Columbia Category:Bow Range Category:Mountains of Banff National Park Category:Mountains of Kootenay National Park Category:Borders of Alberta Category:Borders of British Columbia Category:Great Divide of North America