有了冰河的保護，可以讓褶皺山脈不容易被侵蝕。
上圖a，沒有冰河的保護。
上圖b，有冰河的保護。
資料來源：
Braunjean, J., 2010, Earth science: Glaciers shield mountain tops, Nature, V467, P281–282.
http://www.nature.com/nature/journal/v467/n7313/full/467281b.html
Thomson, S. N., M. T. Brandon, J. H. Tomkin, P. W. Reiners, C. Vásquez & N. J. Wilson, 2010, Glaciation as a destructive and constructive control on mountain building, Nature, V467, P313–317.
http://www.nature.com/nature/journal/v467/n7313/full/nature09365.html