Jan 3, 2018
A rock picture and no lichen, moss, plants, or bugs?! I was a geology major in a past life and specimens like this have me dreaming of volcanology again. During the formation of the cinder cone KA Hill, the top layer of lava forming this rock cooled and hardened when exposed to air, producing cracks like drying mud. It looks like molten layers then flowed over and under that crust, breaking it apart and moving the pieces before cool air exposure again hardened the whole thing. Yay, geology! #geologyrocks #geology #arizona #lava #cindercone #volcano #volcanology #hikeaz67 #happierpodcast #gretchenrubin #lizcraft (at Arizona)
