Basaltic Magma And Granitic Magma

Magma is a fluid of high temperatures or semi fluid with rock fragments formed within the earth s crust.

Basaltic magma and granitic magma.

Andesitic magma is. The viscosity of basaltic and granitic magma is largely distin guished. 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. 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.

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. Basaltic magma is acidic fluid rich in iron and magnesium but poor in silica. Discuss earthquake mechanisms at the three types of tectonic plate boundaries. Step 1 of 4.

Basaltic magma is composed of sio2 45 55 wt high in fe mg ca low in k na. 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 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.

Magmas are with viscosity of 10 4 5 pa s scaillet et al 1998. Describe the similarities and differences between the andes and the. Compare and contrast shield volcanoes cinder cone volcanoes and composite volcanoes. Fs show all show all steps.

Rhyolitic magmas tend to have even higher viscosity ranging between 1 million and 100 million times more viscous than water. For example h 2 o rich crystal poor and high silica. Note that solids even though they appear solid have a viscosity but it very. Explain why basaltic magma and granitic magma behave differently as they rise toward earth s surface.

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