Compare And Contrast Granitic And Basaltic

Basaltic describes a dense dark colored igneous rock formed from magma rich in magnesium and iron.

Compare and contrast granitic and basaltic.

Among other differences the nature of these rocks reveals that basalt is basic in nature whereas granite is acidic in nature. Granite is an intrusive rock and lavas are extrusive rocks. Basaltic rocks are extrusive meaning they crystallized above ground. It is small and this whole thing is the section.

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. Rhyolite is the extrusive rock equivalent to granite. Granite is a felsic rock meaning that it has a high silicon content. Basalt as a mafic rock contains more calcium oxide manganese oxide and iron compounds than granite.

Its high iron content gives it magnetic properties and it may show signs of rust when exposed to air. Basalt is a mafic rock containing calcium rich plagioclase feldspars and no quartz. Also basaltic rocks are more mafic and granitic. Basalt is extrusive phaneritic while granite is intrusive aphantic.

The basaltic lava forms from the hot mantle material at constructive plate boundaries and hotspots whereas the andesitic lava forms at destructive plate boundaries from melting crust. Basalt is highly mafic while granite is felsic. Basaltic mafic granitic felsic andesitic intermediate and ultramafic. Granitic rocks are intrusive which means they crystallized underground.

Basalt is mafic while granite is felsic basalt is common on both earth and other solar system bodies such as the moon and mars while granite is only common on earth and rare elsewhere in the solar system basalt can form in a few days to months whereas granite plutons can take millions of years to cool and harden. Poor in silica granitic describes generally light colored silica rich igneous rock that is. 4 2 compare and contrast basic igneous compositions. Of the two basalt is darker and consists of fine grained minerals such as magnesium and iron while granite is lighter and consist of feldspar and quartz.

It is mostly made out of quartz mica and feldspar. Basically read the 4 2 section. Geography tutor 12739 views.