Definitions for "Pillow lava"
A general term for lavas displaying a pillow structure arising when lava is extruded underwater.
A basaltic lava that forms under water when many small tongues of lava break through the chilled ocean floor and quickly solidify into a rock formation resembling a pile of sandbags.
Lava that erupts underwater and forms a rounded, pillow-like shape.
Keywords:  outwash, pitted
pitted outwash