Generally people model land
Generally people model land forms by imitating what they see, most of the time without thinking about their origins. I studied glacial till as a geology student (BS & MS degree's), and a lot of glacial till isn't terribly remarkable and of more interest to geologists or environmental geologist because of it's make-up. There is a lot of different kinds as well, but the only way to know sometimes that land form is formed by glacial deposits is to look at aerial photo's or drill into it or make test boring or a test pit, something I used to do regularly back in my field geology days.
Not all glacial till has boulders in it FYI; if one is interested in modeling an outcrop of glacial material, it would be helpful to read up on it because it varies by a lot depending on the way it was deposited. When I was in the Chicago area, I drilled through a glacial till that was mostly clayey material and in some cases no boulders - more specifically classified as glacial drift; I wonder if anyone modeling that area realized the RR landscape was gacial drift in origin.
Drift
A collective term used to describe all types of glacier sedimentary deposits, regardless of the size or amount of sorting. The term includes all sediment that is transported by a glacier, whether it is deposited directly by a glacier or indirectly by running water that originates from a glacier.
Where I used to live in Syracuse NY, we had Drumlins; in fact there was a golf course by that name there:
Drumlin
An elongated ridge of glacial sediment sculpted by ice moving over the bed of a glacier. Generally, the down-glacier end is oval or rounded and the up-glacier end tapers. The shape is often compared to an inverted, blunt-ended canoe. Although not common in Alaska, drumlins cover parts of the Eastern and Midwestern United States (Irish).
Probably the deposit discussed above is some type of Moraine, which is a common glacial deposit in the southerly area's where glaciers reached before retreating.
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Moraine
A general term for unstratified and unsorted deposits of sediment that form through the direct action of, or contact with, glacier ice. Many different varieties are recognized on the basis of their position with respect to a glacier.
·Ablation Moraine
An irregular-shaped layer or pile of glacier sediment formed by the melting of a block of stagnant ice. Ultimately, ablationa moraine is deposited on the former bed of the glacier. Also called Ablation Till.
·Ground Moraine
A blanket of glacier till deposited on all of the surfaces over which a glacier moves, typically by moving ice.
·Lateral Moraine
A sediment ridge, located on a glacier's surface adjacent to the valley walls, extending down glacier to the terminus. It forms by the accumulation of rock material falling onto the glacier from the valley wall, rather than by water deposition.
·Medial Moraine
A sediment ridge, located on a glacier's exposed ice surface, away from its valley walls, extending down glacier to the terminus. It forms by the joining of two lateral moraines when two glaciers merge.
·Push Moraine
A ridge or pile of unstratified glacial sediment that is formed in front of the ice margin by the terminus of an advancing glacier, bulldozing sediment in its path.
·Recessional Moraine
A ridge of glacial sediment that forms when the terminus of a retreating glacier remains at or near a single location for a period of time sufficient for a cross-valley accumulation to form.
·Terminal Moraine
A cross-valley, ridge-like accumulation of glacial sediment that forms at the farthest point reached by the terminus of an advancing glacier. Also called an End Moraine.