What Is Granitic Magma Like

It forms from the slow crystallization of magma below earth s surface.

What is granitic magma like.

Partial melting of intermediate rocks can generate felsic granitic magmas. Granite is a light colored igneous rock with grains large enough to be visible with the unaided eye. The parental granitic magma underwent the mixing of mantle derived mafic magma and crustal felsic magma coupled with fractional crystallization during magma ascent before emplacement. Granitic magma has high levels of potassium and sodium while basaltic magma has very low levels of these minerals.

Strictly speaking granite is an. 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. First i would like to clarify the position of one who is said to hold divergent views. When the heat from the hot basaltic magma partially melts the overlying crustal rocks which are silica rich and have a much lower melting temperature the result can be the production of large quantities of granitic magmas.

Explosive eruptions produce tuff or pumice. A crater is a bowl like depression at the top of the volcano. When magmas are judged by mineral composition like this they are technically referred to as felsic which is granitic and mafic which is basaltic. Other articles where granitic magma is discussed.

Eruptions of granitic magma can produce rhyolite pumice obsidian or tuff. These rocks have similar compositions but different cooling conditions. A basaltic pond of magma becomes trapped below continental crust and partially melts this silica rich crust into a granitic magma. Effusive eruptions produce rhyolite or obsidian if the lava cools rapidly.

Figure 2 formation of granitic magma granitic magmas are generated by the partial melting of continental crust. Granites can be predominantly white pink or gray in color depending on their mineralogy the word granite comes from the latin granum a grain in reference to the coarse grained structure of such a completely crystalline rock. Granite ˈ ɡ r æ n ɪ t is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture. 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.