Pillow lavas form when basalt lava erupts underwater at the mid-ocean ridge or on other volcanos such as the Hawaiian islands.
(Pillow; lavas; form; T:when basalt lava erupts underwater at the mid-ocean ridge or on other volcanos such as the Hawaiian islands)
Pillow
lavas
form T:when basalt lava erupts underwater at the mid-ocean ridge or on other volcanos such as the Hawaiian islands