Bulk Chemical Composition Of Basalt Versus Granite

Implications for mantle composition and processes january 1989 geological society london special publications 42 1.

Bulk chemical composition of basalt versus granite.

Granite is a felsic rock meaning that it has a high silicon content. Composition average chemical composition of basalt determined by 3594 chemical analyses of basaltic rocks 2 numbers are mass percents recalculated volatile free to total 100. Porosity and density this range of densities can also be attributed to a rock s porosity the amount of open space between mineral grains. Furthermore many of the continental rock formations are.

Granite makes up the cores of continents and much of the bulk of major mountain ranges around the world. It is mostly made out of quartz mica and feldspar. Basalt is basic and contains a substantial amount of olivine whereas granite is. As the chemical composition of earth s mantle plays a critical role in a number of geochemical and geophysical models it is important to establish a composition model with its uncertainty firmly quantified.

Chemical variation modal composition and classification of granitoids bernard bonin1 vojtěch janoušek2 3 jean françois moyen4 1 umr8148 geops université paris sud cnrs université paris saclay f 91405 orsay. Basalt as a mafic rock contains more calcium oxide manganese oxide and iron compounds than granite. As two rocks are not same it s fun to compare them. 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.

Granite for example can have a quartz content anywhere between 20 and 60. Granite vs basalt information earth s outer layer is covered by rocks and these rocks have different physical and chemical properties. The color of the rocks is dependent on the mineral composition of the rock. Granite is lighter in color than basalt.

Chemical and isotopic systematics of oceanic basalts. Earth contains three kinds of rocks namely igneous rocks sedimentary rocks and metamorphic rocks. Granite is an intrusive igneous rock with a felsic composition.