What Does Granitic Magma Mean

Basaltic magmas that form the oceanic crust of earth are generated in the asthenosphere at a depth of about 70 kilometres.

What does granitic magma mean.

A will of granite. 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. 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. 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 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. Other articles where basaltic magma is discussed. 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. Italian granito from past participle of granire to make grainy from grano grain from latin grānum.

Granite is a light colored igneous rock with grains large enough to be visible with the unaided eye. Due in part to the lower temperature felsic magma is much more viscous than mafic magma meaning it is much thicker and more resistant to flowing. Besides molten rock magma may also contain suspended crystals and gas bubbles. Magma from ancient greek μάγμα mágma meaning thick unguent is the molten or semi molten natural material from which all igneous rocks are formed.

A common coarse grained light colored hard igneous rock consisting chiefly of quartz orthoclase or microcline and mica used in monuments and for building. 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. 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.