Robert Delaunay, 1912â13, Le Premier Disque, 134 cm (52.7 in.), Private collection. Abstract art uses a visual language of shape, form, color and line to create a composition which may exist with a degree of independence from visual references in the world. Western art had been, from the Renaissance up to the middle of the 19th century, underpinned by the logic of perspective and an attempt to reproduce an illusion of visible reality.
The magma here also cools into rock, but at a much slower speed than the lava at the surface. This gives crystals more time to grow, making the larger-grained rock known as gabbro. So thatâs why basalt is at the top of the ocean plate and gabbro is at the bottom. To put it in the form of the worldâs worst poem:
Granite is the foundation of the continental crust. Basalt is the foundation of oceanic crust. Granite is an intrusive igneous rock made from visible mineral crystals, a result of cooling over a longer period of time under the surface of the Earth. Another difference between basalt and granite include their joints. Basalt splits along columnar planes while granite splits along horizontal planes.