Encyclopedia of Planetary Landforms

2015 Edition
| Editors: Henrik Hargitai, Ákos Kereszturi

Scalloped Terrain

Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-3134-3_338


In strict sense, it is terrain displaying rimless elongated to circular scalloped-shape depressions resulting from the degradation of ground ice (Costard and Kargel 1995).


A type of  periglacial landform formed by the degradation of ground ice ( thermokarst landforms).


 Alas-like depression; Scallop (not recommended); Scalloped depression;  Thermokarst depression


Scalloped depressions generally have circular to elliptical shapes with diameters ranging from tens of meters to several kilometers and depths extending to several tens of meters (Figs. 1 and 2; Costard and Kargel 1995; Plescia 2003; Morgenstern et al. 2007; Soare et al. 2007). They are flat floored with no raised rims and are characterized by a NS asymmetric profile; their pole-facing slopes are steeper (5–20°) than their equator-facing slopes (2–5°) (Figs. 1b and 2b; Morgenstern et al. 2007; Soare et al. 2007; Lefort et al. 2009, 2010; Ulrich et al. 2010; Zanetti et al. 2010;...
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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.UMR8148GEOPS, Univ Paris-Sud, CNRSOrsayFrance
  2. 2.Department of Earth and Planetary SciencesThe University of TennesseeKnoxvilleUSA