Chapter

Eroded by ice

David J. A. Evans

in Glaciation: A Very Short Introduction

Published in print October 2018 | ISBN: 9780198745853
Published online October 2018 | e-ISBN: 9780191808227 | DOI: https://dx.doi.org/10.1093/actrade/9780198745853.003.0005

Series: Very Short Introductions

Eroded by ice

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There is a very wide range of spatial and temporal scales reflected in the types of glacial erosional landforms, from individual millimetre-wide striae that can form over a few days to fjords tens of kilometres long that require hundreds of thousands of years to develop. Erosional landforms can be discussed in categories defined by three spatial scales: microscale, macroscale, and megascale, the latter also including whole landscapes that have unmistakable glacial erosional origins. ‘Eroded by ice’ describes these different erosional forms and explains that they are rarely viewed in isolation because microscale erosional marks are superimposed on macroscale forms, which in turn are superimposed on megascale surfaces to constitute erosional landscapes.

Keywords: cirque; drainage; drumlin; glacial; glacier; ice stream; lake; landscape; moraine; roche moutonnée; tunnel valley

Chapter.  2494 words. 

Subjects: Physical Geography and Topography

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