AbstractGet full access to this articleView all access options for this article.Get accessReferences1. Goudie, A. S. , Atkinson, B. W. , Gregory, K. J. , Simmons, I. G. , Stoddart, D. R. and Sugden, D. , editors, 1994: The encyclopedic dictionary of physical geography (2nd edn). Oxford: Blackwell.
