GEO 110 Lecture Notes - Lecture 9: Moraine, Glacier Morphology, Outwash Plain
14 Jun 2016
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Document Summary
A ground moraine is basically a till-covered area. A terminal moraine is a moraine that is deposited furthest from the glacier/valley. A recessional moraine is a series of ridges running across a valley behind a terminal moraine. They are formed perpendicular to the later moraines that they reside between and are composed of debris deposited by the glacier. Lateral moraine is developed on the side of a valley glacier which leads the deposit of rock fragments and sediments along the valley of glacier. Any extra debris from the valley walls just stacks up on the side of the mountain glacier. Medial moraine is when the lateral moraines merge into the middle of the larger moraine. This till forms a visible dark strip on the surface of the ice. Moraine dam is caused by periodic glacier floods. Plucking and transportation is when a glacier ice slides over a bed rock, the glacier drags and moves the sediments along its path.
