Eon Mountain is located just south of Mount Assiniboine and straddles the

Continental Divide A continental divide is a drainage divide on a continent such that the drainage basin on one side of the divide feeds into one ocean or sea, and the basin on the other side either feeds into a different ocean or sea, or else is endorheic, not ...

marking the

Alberta Alberta is a Provinces and territories of Canada, province in Canada. It is a part of Western Canada and is one of the three Canadian Prairies, prairie provinces. Alberta is bordered by British Columbia to its west, Saskatchewan to its east, t ...

British Columbia British Columbia is the westernmost Provinces and territories of Canada, province of Canada. Situated in the Pacific Northwest between the Pacific Ocean and the Rocky Mountains, the province has a diverse geography, with rugged landscapes that ...

border. It is Alberta's 41st-highest peak, and the 53rd-highest peak in British Columbia. It was named in 1901 by James Outram. Originally adopted as Mount Eon in 1928 it was later changed to Eon Mountain in October 1957. The first ascent of Eon was made on July 17, 1921, by Winthrop E. Stone, then President of

Purdue University Purdue University is a Public university#United States, public Land-grant university, land-grant research university in West Lafayette, Indiana, United States, and the flagship campus of the Purdue University system. The university was founded ...

, who fell to his death shortly after reaching the summit. Stone had climbed the final chimney and then unroped on the summit. Upon returning to the chimney he stepped on a loose stone near the edge and fell. His wife was stationed at the base of the final chimney at the time. She was able to descend to on the south face and was rescued on July 24. On August 5, a five-man recovery team ascended the SE

arête An arête ( ; ) is a narrow ridge of rock that separates two valleys. It is typically formed when two glaciers erode parallel U-shaped valleys. Arêtes can also form when two glacial cirques erode headwards towards one another, although frequ ...

to retrieve Stone's body which was located some below the summit. __NOTOC__

Geology

The mountain is composed of

sedimentary rock Sedimentary rocks are types of rock (geology), rock formed by the cementation (geology), cementation of sediments—i.e. particles made of minerals (geological detritus) or organic matter (biological detritus)—that have been accumulated or de ...

laid down during the

Precambrian The Precambrian ( ; or pre-Cambrian, sometimes abbreviated pC, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon. The Precambrian is so named because it preceded the Cambrian, the first period of t ...

Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately 143.1 Mya. ...

periods. Formed in shallow seas, this sedimentary rock was pushed east and over the top of younger rock during the

Laramide orogeny The Laramide orogeny was a time period of mountain building in western North America, which started in the Late Cretaceous, 80 to 70 million years ago, and ended 55 to 35 million years ago. The exact duration and ages of beginning and end of the o ...

Climate

Based on the

Köppen climate classification The Köppen climate classification divides Earth climates into five main climate groups, with each group being divided based on patterns of seasonal precipitation and temperature. The five main groups are ''A'' (tropical), ''B'' (arid), ''C'' (te ...

, Eon Mountain is located in a

subarctic climate The subarctic climate (also called subpolar climate, or boreal climate) is a continental climate with long, cold (often very cold) winters, and short, warm to cool summers. It is found on large landmasses, often away from the moderating effects of ...

zone with cold, snowy winters, and mild summers. Temperatures can drop below with wind chill factors below .

Gallery

File:Gloria, Eon and Aye Mountains, Mt Assiniboine.jpg, Eon Mountain to left, Aye Mountain centered, Assiniboine to right File:Mt. Assiniboine 2017.jpg, Eon Mountain to left behind Mt. Assiniboine File:Mts. Eon & Aye.jpg, Mts. Eon (left) & Aye (behind tree) from skiout

References

{{Canadian Rockies, state=collapsed Eon Mountain Eon Mountain Park Ranges Kootenay Land District

Geology

Climate

Gallery

See also

References