Pinnacle Mountain is a mountain

summit A summit is a point on a surface that is higher in elevation than all points immediately adjacent to it. The topography, topographic terms acme, apex, peak (mountain peak), and zenith are synonymous. The term (mountain top) is generally used ...

Banff National Park Banff National Park is Canada's oldest National Parks of Canada, national park, established in 1885 as Rocky Mountains Park. Located in Alberta's Rockies, Alberta's Rocky Mountains, west of Calgary, Banff encompasses of mountainous terrain, wi ...

Alberta Alberta ( ) is one of the thirteen provinces and territories of Canada. It is part of Western Canada and is one of the three prairie provinces. Alberta is bordered by British Columbia to the west, Saskatchewan to the east, the Northwest Ter ...

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

. It's part of the

Bow Range The Bow Range is a mountain range of the Canadian Rockies in Alberta and British Columbia, Canada. The range is named in associated with the Bow River and was officially adopted on March 31, 1917 by the Geographic Board of Canada. It is a part ...

, which is a sub-range of the

Canadian Rockies The Canadian Rockies (french: Rocheuses canadiennes) or Canadian Rocky Mountains, comprising both the Alberta Rockies and the British Columbian Rockies, is the Canadian segment of the North American Rocky Mountains. It is the easternmost part ...

. The nearest higher peak is

Eiffel Peak Eiffel Peak is a mountain summit in Banff National Park in Alberta, Canada. It's part of the Bow Range, which is a sub-range of the Canadian Rockies. The nearest higher peak is Mount Temple, to the northeast. History The first ascent was ...

, to the southwest. Mount Temple is situated immediately northeast of Pinnacle Mountain, with Sentinel Pass as the low point between the two.

History

The peak was named in 1894 by

Walter Wilcox Walter Dwight Wilcox (1869–1949) was an early explorer of the Canadian Rockies, especially in the Lake Louise region. Life Wilcox was educated at Phillips Academy, Andover (Class of 1889) and Yale University (1893). Walter Wilcox is known fo ...

because of large pinnacles on the mountain near Sentinel Pass. Wilcox wrote of the pinnacles in his 1896 book, "Camping in the Canadian Rockies": ''"The limestone strata of this mountain were nearly perfectly horizontal, and had been sculptured by rain and frost into an endless variety of minarets, spires, and pinnacles. These, crowning the summits of ridges and slopes with ever changing angles, as though they represented alternating walls and roofs of some great cathedral, all contributed to give this mountain, with its elegant contours and outlines, the most artistically perfect assemblage of forms that nature can offer throughout the range of mountain architecture. On the north side of this mountain, as though, here, nature had striven to outdo herself, there rose from the middle slopes a number of graceful spires or pinnacles, perhaps 200 or 300 feet in height, slender and tapering, which, having escaped the irresistible force of moving glaciers and destructive earthquakes, through the duration of thousands of years, while the elements continued their slow but constant work of disintegration and dissolution, now presented these strange monuments of an ageless past."'' Three previous attempts had been unsuccessful before the

first ascent In mountaineering, a first ascent (abbreviated to FA in guide books) is the first successful, documented attainment of the top of a mountain or the first to follow a particular climbing route. First mountain ascents are notable because they en ...

was made in 1909 by J. W. A. Hickson, with Edward Feuz Jr. and Rudolph Aemmer as guides. The mountain's toponym was officially adopted in 1952 by the

Geographical Names Board of Canada The Geographical Names Board of Canada (GNBC) is a national committee with a secretariat in Natural Resources Canada, part of the Government of Canada, which authorizes the names used and name changes on official federal government maps of Canada ...

Geology

Like other mountains in Banff Park, Pinnacle Mountain is composed of

sedimentary rock Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth's surface, followed by cementation. Sedimentation is the collective name for processes that cause these particles ...

laid down during the

Precambrian The Precambrian (or Pre-Cambrian, sometimes abbreviated pꞒ, 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 the ...

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 Mya. The J ...

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, 70 to 80 million years ago, and ended 35 to 55 million years ago. The exact duration and ages of beginning and end of the o ...

. The ''Grand Sentinel'' is the largest of the pinnacles located on the mountain. This

quartzite Quartzite is a hard, non- foliated metamorphic rock which was originally pure quartz sandstone.Essentials of Geology, 3rd Edition, Stephen Marshak, p 182 Sandstone is converted into quartzite through heating and pressure usually related to tect ...

tower rises 120 metres above the scree slopes on the Paradise Valley side of Sentinel Pass.

Climate

Based on the

Köppen climate classification The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, with several later modifications by Köppen, notabl ...

, Pinnacle Mountain is located in a

subarctic climate The subarctic climate (also called subpolar climate, or boreal climate) is a 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 an ocean, ge ...

zone with cold, snowy winters, and mild summers. Winter temperatures can drop below −20 °C with wind chill factors below −30 °C.

Gallery

File:The Rockies of Canada; (1909) (14761323754).jpg, Pinnacle Mountain and Eiffel Peak photographed by Walter Wilcox from Mount Aberdeen, likely during his first ascent in 1894 File:The Grand Sentinel in Banff.jpg, The Grand Sentinel, a quartzite pinnacle File:Pinnacle Mountain in Banff National Park, Canada.jpg, Pinnacle Mountain File:Historical image of Pinnacle Mountain and Eiffel Peak.jpg, 1898 image of Pinnacle Mountain (left) and Eiffel Peak (right) seen from the north at Paradise Valley

References

External links