The last person says the question isn\'t visible which is scary because it is mi
ID: 299547 • Letter: T
Question
The last person says the question isn't visible which is scary because it is missing one letter.... The question says Describe the general structure, slope, drainage, and processes involved using the landscape in figure 13-19 which is clearly visible
escribe the general structure, slope, drainage, and processes involved in the development of e landscape in Figure 13-19. Figure 13-19 The spectacular terra in of Montans's Glacier Nationsl Park wss produced by a variety of interacting processes, but most recently glaciation domineted. This view is across St. Mary Lake. Slope is a conspicuous visual elame nt of some landscapes Here the steep cliff on the left is Citadel Mountain. CANADA National Park MONTANAExplanation / Answer
Steep red mountain sides and the glacial lake are the two most important features of the Montana's glacier park. These red rocks are part of Grimmerl formation which the metamorphosed sedimentary rocks formed in Precambrian time and is about 790 m thick. The red colour is due to rusting of iron oxides.
Recent geological events have shaped the rocks of the Montana's glacier park into steep walled valleys and sharp mountain peaks. The glaciers covered most of northern Montana during the last glaciation which lasted from 100,000 to 10,000 years. These glaciers cut into pre existing streambeds, carving valleys with nearly vertical walls. Afterwards erosion in the walls mainly due to freezing and thawing in the crevices of rocks filled the valleys with sloping piles of rock and sand. This type of erosion in the valleys resulted in the formation of U shaped valleys. The melting leave behind glacial till which are poorly sorted accumulations of sediments on the valley floor and numerous glacial lakes which are the basins recently filled by the glacial water. Besides that the park is filled with glacial landforms like horns, cirques, aretes, hanging valleys and morains.
The structure which is found in Montana's glacier park is Lewis Overthrust Fault which formed about 170 million years ago when the collision of the crustal plates took places which elevated numerous mountain chains and formed Rocky mountains. The extent of lateral displacement of this overthrust fault is upto 80 kilometers.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.