Ice lens (Glaciology 🗻)

Ice lenses are bodies of ice formed when moisture, diffused within soil or rock, accumulates in a localized zone. The ice initially accumulates within small collocated pores or pre-existing crack, and, as long as the conditions remain favorable, continues to collect in the ice layer or ice lens, wedging the soil or rock apart. Ice lenses grow parallel to the surface and several...

https://en.wikipedia.org/wiki/Ice_lens

#IceLens #Glaciology #Permafrost #ErosionLandforms