Basaltic Igneous Rocks Are Lower In Density Than Granitic Rocks

Granite and rhyolite are felsic igneous rocks intermediate igneous rocks have a density.

Basaltic igneous rocks are lower in density than granitic rocks.

This magma is thick and stiff. They have a higher silica content and a lower iron and magnesium content than the other types of rock. The difference between granites and basalts is in silica content and their rates of cooling. High in silica content b.

Sedimentary rocks and granite which are rich in quartz and feldspar tend to be less dense than volcanic rocks. Consequently due to buoyancy the continental crust rides above the oceanic lithosphere and. Intrusive slowly cooled inside the crust. Plutonic rock formed in the earth.

Rock density is very sensitive to the minerals that compose a particular rock type. Igneous rock with a mineral composition between that of basaltic and granitic rock. Continental crust density 2 7 2 8. A basalt is about 53 sio2 whereas granite is 73.

The density of the continental granitic lithosphere is lower than oceanic basaltic lithosphere. Light colored igneous rock of lower density than basaltic rock formed from magma rich in silica but poor iron and magnesium. Lower in density than basaltic rocks d. Igneous rocks are formed by the crystallisation of a magma.

High in iron content. Rich in quartz and potassium feldspar.