Drumlin Drumlin A drumlin, from the Irish word "droimnín" ("littlest ridge"), first recorded in 1833, and in the classical sense is an elongated hill in the shape of an inverted spoon or half-buried egg formed by glacial ice acting on underlying unconsolidated till or ground moraine. Drumlins occur in various shapes and sizes, including symmetrical (about the long axis), spindle, parabolic forms, together with transverse asymmetrical forms; their long axis is parallel to the direction of movement of the formative flow at the time of formation. Drumlins are typically long, less than high and between wide. Drumlins generally have a length:width
Glacial series model of the glacial series. A common variation, for example, is the spillage of younger meltwaters over older ground moraine beds. In addition, a further advance of the glacier can result in the interlacing of various older landforms of the glacial series. For example, lines of terminal moraines lying close behind one another in the Brandenburg region of Germany drained over the same sandurs and via the same meltwater valley. Glacial series The glacial series refers to a particular sequence of landforms in Central Europe that were formed during the Pleistocene glaciation beneath the ice sheets, along their margins and