Basaltic Magma And Granitic Magma

Discuss earthquake mechanisms at the three types of tectonic plate boundaries.

Basaltic magma and granitic magma.

Other articles where granitic magma is discussed. Magma is a fluid of high temperatures or semi fluid with rock fragments formed within the earth s crust. 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. Thus basaltic magmas tend to be fairly fluid low viscosity but their viscosity is still 10 000 to 100 0000 times more viscous than water.

Step 1 of 4. Andesitic magma is. Although granitic magmas can be formed through magmatic differentiation of andesitic magmas most granitic magmas probably form when hot basaltic magma ponds becomes trapped because of its greater density below continental crust figure 2. Describe the similarities and differences between the andes and the.

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. For example h 2 o rich crystal poor and high silica. Granitic magma is basic viscous a high melting point with a high percentage of silica. Granite is formed by the slow cooling of magma within the surface of the earth while basalt is formed when magma quickly cools after breaching the earth s surface through.

Note that solids even though they appear solid have a viscosity but it very. Rhyolitic magmas tend to have even higher viscosity ranging between 1 million and 100 million times more viscous than water. Basaltic magma is composed of sio2 45 55 wt high in fe mg ca low in k na. Explain why basaltic and granitic magma behave differently as they rise toward earth s surface.

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. The viscosity of basaltic and granitic magma is largely distin guished. Magmas are with viscosity of 10 4 5 pa s scaillet et al 1998. Basaltic magma is acidic fluid rich in iron and magnesium but poor in silica.

Granitic magma is basic viscous a high melting point with a high percentage of silica.