Pahoehoe and aa lava
Meaning
Two surface textures of basaltic flows. Pahoehoe has a smooth, undulating surface; aa is fragmented into angular, rough blocks.
Reference source
Volcanic edifices and morphologies of the Canary Islands
Two surface textures of basaltic flows. Pahoehoe has a smooth, undulating surface; aa is fragmented into angular, rough blocks.
Volcanic edifices and morphologies of the Canary Islands