Basaltic And Granitic Lava

High silica content in the andesitic lava contributes to causing this high viscosity and low silica content in the basaltic lava means it is of a lower viscosity.

Basaltic and granitic lava.

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. Basalt is an extrusive igneous rock whereas granite is an intrusive ingenuous rock. Those who do not know extrusive rocks are those formed of lava coming out of volcanoes whereas rocks formed of magma that has yet not come out of the volcano are termed as intrusive rocks. Basalt is a dark colored fine grained igneous rock composed mainly of plagioclase and pyroxene minerals.

First of all you should know the difference between lava and magma magma and lava are both molten liquid rock but magma is moltenrock produced underneath earth surface while it magma erupts on the surface of earth it is called lava. Andesitic lava is an example of a high viscosity lava whereas balastic lava has a low viscosity so is more runny. It most commonly forms as an extrusive rock such as a lava flow but can also form in small intrusive bodies such as an igneous dike or a thin sill it has a composition similar to gabbro the difference between basalt and gabbro is that basalt is a fine grained rock while. Basaltic magma contains between 45 and 55 percent silicon dioxide and is high in magnesium iron and calcium while granitic magma contains between 65 and 75 percent silicon dioxide and only small amounts of those minerals.

It forms from lava flows which extrude onto the surface and cool. Basalt is more common in oceanic crust while granite is more common in continental crust. Earth contains three kinds of rocks namely igneous rocks sedimentary rocks and metamorphic rocks basalt and granite are two types of igneous rocks. The key difference between basalt and granite is that basalt is mostly occurring on ocean floors while granite is in the crust of the earth in all continents.

One major difference between basaltic and granitic magma is their specific mineral contents. Basalt is an igneous volcanic rock that forms commonly in oceanic crust and parts of continental crust. Granitic or rhyolitic lava has a much higher silica content than basaltic lava. Eruptions of granitic lava usually entail a composite cone volcano which produces both lava and pyroclastic material while.

Summary of basalt vs.