Material deposited by a glacier can take many forms.
Along the edges of a glacier, piles of debris called moraine can accumulate where the ice margin has remained stagnant over a long period of time. As the ice melts, the stream deposited material falls out as well. Long ridges and terraces of stream sorted gravels and sands can be found across the New England landscape. Recent studies by Loso et al. confirm that the ridges at Miller Brook are most likely of glacial origin and not protalus ramparts, river deposits, or manmade structures. If these deposits were indeed formed by a valley glacier it would have occurred after the Laurentide Ice Sheet had essentially wiped the slate clean.