EAES 101 Lecture Notes - Lecture 19: Sediment Transport, Aretes, Rock Flour
12 Oct 2016
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Glaciers 3: erosion, transport, and deposition: cadieux. Iclicker: currently, glaciers cover how much of the surface of continents: 10% Iclicker: what happens during glacial retreat: the glacier flows back to its origin. Landforms caused by erosion by mountain glaciers: erosional features of glaciated valleys, cirques, tarns, aretes, horns, u-shaped valleys, hanging valleys, fjords. Pre-glacial landscape: dendritic river drainage, v-shaped valleys, rounded mountains. Glacial landscape [mountain glaciers: ice fills the valley. Landforms caused by erosion by continental glaciers: north central north america is flat, compared to western edge. Animations and movies of erosion and landscapes from glaciers: video summarizing glacial landforms, https://www. youtube. com/watch?v=pdajvbslfom, http://ees. as. uky. edu/sites/default/files/elearning/module1, be sure to click through all the arrows and menus [it"s not arranged very logically, but is a nice review tool] Glacial sediment transport: glaciers carry sediment of all sizes-lots of it, some sediment falls onto the ice from adjacent cliffs, most sediment is collection from erosion, when glacial ice melts, the sediments is dropped in place.
