ChristineKelt
Peyto Lake, Bow Summit
Peyto Lake is the 5th largest lake in Banff National Park.
1. Sedimentary rock- each layer represents a distinct period of time when deposition took place on the floor of ancient seas (approx. 1.5 billion years ago). An anticline resulted in upward angle of sediment layers. Weathering has shaped the landscape further.
2. Precipitation & weathering eroded hourglass- shaped gullies on S.W. aspects.
3. Originally a V- Shaped valley, deepened & widened during glaciation to form a U-Shaped valley (Mistaya Valley).
4. A result of changes in temperature, humus, and exposure to elements e.g. wind.
5. Rock flour- shortly after the ice on the surface of the lake melts the water is largely free of sediment (surface appears dark blue). As Peyto Glacier melts the content of rock flour increases, changing the colour of the lake to a blue/ green hue as seen above. Rock flour particles reflect the blue/ green spectra of light- colour varies according to particle size, depth of water, turbulence, amount of sunlight etc.
6 & 7. Mistaya is a Stoney word for grizzly bear. The river on the floor of the valley was originally called Bear Creek (shape of peyto lake- bear's head? some people feel that it looks more like a wolf's head), but changed as another river already had this title.
Peyto Lake, Bow Summit
Peyto Lake is the 5th largest lake in Banff National Park.
1. Sedimentary rock- each layer represents a distinct period of time when deposition took place on the floor of ancient seas (approx. 1.5 billion years ago). An anticline resulted in upward angle of sediment layers. Weathering has shaped the landscape further.
2. Precipitation & weathering eroded hourglass- shaped gullies on S.W. aspects.
3. Originally a V- Shaped valley, deepened & widened during glaciation to form a U-Shaped valley (Mistaya Valley).
4. A result of changes in temperature, humus, and exposure to elements e.g. wind.
5. Rock flour- shortly after the ice on the surface of the lake melts the water is largely free of sediment (surface appears dark blue). As Peyto Glacier melts the content of rock flour increases, changing the colour of the lake to a blue/ green hue as seen above. Rock flour particles reflect the blue/ green spectra of light- colour varies according to particle size, depth of water, turbulence, amount of sunlight etc.
6 & 7. Mistaya is a Stoney word for grizzly bear. The river on the floor of the valley was originally called Bear Creek (shape of peyto lake- bear's head? some people feel that it looks more like a wolf's head), but changed as another river already had this title.