Basaltic Magma And 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.

Basaltic magma and granitic magma. Granitic magma is basic viscous a high melting point with a high percentage of silica. Explain why basaltic 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. 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.

Magmas are with viscosity of 10 4 5 pa s scaillet et al 1998. Magma is a fluid of high temperatures or semi fluid with rock fragments formed within the earth s crust. Compare and contrast shield volcanoes cinder cone volcanoes and composite volcanoes. 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. 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. Rhyolitic magmas tend to have even higher viscosity ranging between 1 million and 100 million times more viscous than water. Other articles where granitic magma is discussed.

The viscosity of basaltic and granitic magma is largely distin guished. Discuss earthquake mechanisms at the three types of tectonic plate boundaries. Describe the similarities and differences between the andes and the. Andesitic magma is.

Step 1 of 4. Explain why basaltic magma and granitic magma behave differently as they rise toward earth s surface. 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. Note that solids even though they appear solid have a viscosity but it very.

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