While hiking up a mountain valley, you come upon a lake, dammed by wall of unconsolidated sediments. you suspect that those sediments may have been deposited across the valley by a glacier that has since melted away. describe thoroughly what those sediments would look like and why they could not be from a stream. viewing up the valley, what other clue would support it being a glaciated valley rather than a stream valley? large boulders are strewn haphazardly throughout the valley as well? does that evidence support a glacier depositing the boulders or a stream depositing the boulders? defend your reasoning. an initial post and at least two replies are required.