Cross-sectional view of a dessication crack cast with fine-grained sandstone in the Mabou Group (Mississippian), near Antigonish, Nova Scotia.
<a href="//commons.wikimedia.org/wiki/User:Rygel,_M.C." title="User:Rygel, M.C.">Michael C. Rygel</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>