glacial erratics

Key sites

Burn of Mail



Glacial Deposition

Two main groups of landforms are recognised that result from deposition by ice:

  • glacial forms, deposited directly from ice
  • glacifluvial forms, deposited by meltwater

Shetland is predominantly a landscape of glacial erosion and most debris has been transported offshore. Nonetheless examples from both groups of depositional landforms are represented in the valleys of Shetland where melting ice masses dumped material during deglaciation. These landforms may be also be classified in terms of their position relative to the former valley glacier, as subglacial, englacial, supraglacial, marginal and proglacial landforms.