What Does Granitic Magma Mean

A will of granite.

What does granitic magma mean.

For example a large proportion of the zirconium in a given granitic rock may have a restitic origin but this does not necessarily mean that a similarly large proportion of the. Basaltic magmas that form the oceanic crust of earth are generated in the asthenosphere at a depth of about 70 kilometres. Although basaltic magma can result in basaltic rocks and granitic magma can result in granitic rocks they can also form other rocks depending on how quickly the magma cools. Other articles where granitic magma is discussed.

Granite is composed mainly of quartz and feldspar with minor amounts of mica amphiboles and other minerals this mineral composition usually gives granite a red pink gray or white color with dark mineral. Granite is a light colored igneous rock with grains large enough to be visible with the unaided eye. The mantle rocks located at depths from about 70 to 200 kilometres are believed to exist at temperatures slightly above their melting point and. Granite definition a coarse grained igneous rock composed chiefly of orthoclase and albite feldspars and of quartz usually with lesser amounts of one or more other minerals as mica hornblende or augite.

Magma is found beneath the surface of the earth and evidence of magmatism has also been discovered on other terrestrial planets and some natural satellites. It forms from the slow crystallization of magma below earth s surface. This must mean that the degree of control exerted by restites on magma compositions is rather variable and depends on the particular magma component being considered. Italian granito from past participle of granire to make grainy from grano grain from latin grānum.

Besides molten rock magma may also contain suspended crystals and gas bubbles. Other articles where basaltic magma is discussed. Granitic or rhyolitic magmas and andesitic magmas are generated at convergent plate boundaries where the oceanic lithosphere the outer layer of earth composed of the crust and upper mantle is subducted so that its edge is positioned below the edge of the continental plate or.