Igneous rock the partial melting of rocks within the mantle and crust. Extrusive igneous rocks cool and solidify quicker than intrusive igneous rocks. They are formed by the cooling of molten magma on the earth's surface. The magma, which is brought to the surface through fissures or volcanic eruptions, solidifies at a faster rate. Hence such rocks are smooth, crystalline and fine-grained. Basalt is a common extrusive igneous rock and forms lava flows, lava sheets and lava plateaus. Some kinds of basalt solidify to form long polygonal columns. The Giant's Causeway in Antrim, Northern Ireland is an example. The molten rock, with
Lava Hay being less artistically cohesive than the debut; while Little's songs retained the folk flavour the band was known for, Gould's were rapidly evolving toward a rock style strongly influenced by one of her first musical heroes, Chrissie Hynde. After Lava Hay broke up in 1994, Gould formed the band Taste of Joy and Little released material as a solo artist. Lava Hay Lava Hay were a Canadian folk rock duo formed in 1989 in Toronto, Ontario, consisting of Suzanne Little and Michele Gould. Little and Gould first met in 1986, while working at "Now". In 1989 they recorded an album