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 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 on their forelands during each glacial advance. The term "glacial series" () was used as early as 1882 by Albrecht Penck initially for the northern Alpine Foreland. Later the term was expanded and used to refer to the Scandinavian glaciation region. The elements of an ideal and complete glacial series are: The term "glacial series" is restricted to landforms created by glaciers and classified by geomorphological rules, as opposed to