Types of Lava
A'a
A'a' lava is the most common appearance type of lava flows that cool down forming fragmented, rough, sometimes spiny, or blocky surfaces.
source:
decadevolcano.net
image:
world-visits.blogspot.com
Pahoehoe
Pahoehoe definition, basaltic lava having a smooth or billowy surface. See more.
source:
dictionary.com
image:
mistermoose.org
Pillow Lava
Pillow lavas are lavas that contain characteristic pillow-shaped structures that are attributed to the extrusion of the lava under water, or subaqueous extrusion. Pillow lavas in volcanic rock are characterized by thick sequences of discontinuous pillow-shaped masses, commonly up to one metre in diameter.
source:
en.wikipedia.org
image:
youtube.com