page_title: Diadem Peak
section_title: Geology
hierarchical_section_title: Diadem Peak / Geology
caption_attribution_description: English: Mushroom Peak (left) and Diadem Peak seen from the Icefields Parkway in Jasper National Park, Canada
context_page_description: Diadem Peak is a peak located in the Sunwapta River Valley of Jasper National Park, Canada. Diadem Peak is essentially the high point of a ridge leading down from the slightly higher Mount Woolley. This peak was the first 11,000er north of the Columbia Icefield to be climbed and one of the few peaks in the Canadian Rockies to be climbed before 1900.
  The mountain was named in 1898 by the first ascent team of J. Norman Collie, Hugh Stutfield and Hermann Woolley. Upon reaching the summit, they discovered a crown of snow about 30 m high covering the almost flat layer of rocks on top.
context_section_description: Diadem Peak is composed of sedimentary rock laid down from the Precambrian to Jurassic periods. Formed in shallow seas, this sedimentary rock was pushed east and over the top of younger rock during the Laramide orogeny.
caption: Mushroom Peak (left) and Diadem Peak (right) seen from the Icefields Parkway
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