What Is A Granitic Magma

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.

What is a granitic magma.

When magmas are judged by mineral composition like this they are technically referred to as felsic which is granitic and mafic which is basaltic. Granitic magma has high levels of potassium and sodium while basaltic magma has very low levels of these minerals. The fracture network in granitic magmas consists of through going backbone mafic and silicic composite dykes and smaller dangling granitic dykes locally generated in the magma chamber. 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.

Other articles where granitic magma is discussed. Granitic magmas commonly ascend tens of kilometres from their source terranes to upper crustal emplacement levels or to the earth s surface. Curve representing li f granitic magma and red referring to general granitic magma. 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.

The emplacement of granitic magma within the continental crust marks the final stage in the granite forming process. Emplacement is defined here as the switch from upward to horizontal flow and. The interval of the same color curves is the variation of the particle settling velocity in the corresponding. Granitic magma must make room for itself or be intruded into other rocks in order to form an intrusion and several mechanisms have been proposed to explain how large batholiths have been emplaced.