Deposition
There are many examples of deposition in Glacier Bay, from rubble fields that have been left behind by retreating glaciers, to piles of stone on the banks of glacial streams made up of debris that the water has carried down from the glaciers. In Adam's Inlet, there is a field of rubble separating the glacier's terminus from the tide line. This rock that has been piled high in the glacier's wake is an example of deposition. In the high ground behind a glacier there are often random piles of mixed gravel, called eskers. These too have been deposited by glaciers. The last form of deposition in Glacier Bay is moraines. The first type of moraine takes the form of a high mound of gravel, pushed forward by the glacier. The other type of moraines are lateral moraines. These are long piles of rubble that run along the sides of the glacier, and they sometimes get built up past the top of the glacier.