Lava Essay Topics

Intrusive and minor extrusive features of vulcanicity

Intrusive: Batholith: A large emplacement of igneous plutonic rock, formed by magma cooling deep in the Earth’s crust. Buoyant magma pushes up through the country rock, partially melting it, and then cools. A good example is the Cornubian batholith in south-west England, which has broken through the surface to form the well-known granite structures of… View Article