The Fraser Glaciation in the Cascade Mountains, southwestern British Columbia ...

• Main Author: Waddington, Betsy Anne
• Format: Text
• Language: English
• Published: University of British Columbia 2009
• Subjects: Ice Sheet
• Online Access: https://dx.doi.org/10.14288/1.0086815; https://doi.library.ubc.ca/10.14288/1.0086815

The objective of this study is to reconstruct the history of glaciation from the start of Fraser (Late Wisconsinan) Glaciation to the end of deglaciation, for three areas in the Cascade Mountains. The Cascade Mountains are located between the Coast Mountains and the Interior Plateau in southwestern British Columbia. The Coast Mountains were glaciated by mountain glaciation followed by frontal retreat, whereas the Interior Plateau underwent ice sheet glaciation followed by downwasting and stagnation. The Cascades were supposed to have undergone a style of glaciation transitional between these two. Terrain mapping on air photographs followed by field checking was used to locate surficial materials and landforms indicative of glaciation style and pattern. All three study areas were glaciated by mixed mountain and ice sheet glaciation. At the start of Fraser Glaciation, alpine and valley glaciers formed around higher summits as occurred in the Coast Mountains. At the glacial maximum the entire area was covered ...