Bulk Chemical Composition Of Basalt Versus Granite

The color of the rocks is dependent on the mineral composition of the rock.

Bulk chemical composition of basalt versus granite.

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. Granite makes up the cores of continents and much of the bulk of major mountain ranges around the world. Granite is a felsic rock meaning that it has a high silicon content. Implications for mantle composition and processes january 1989 geological society london special publications 42 1.

Furthermore many of the continental rock formations are. Basalt is basic and contains a substantial amount of olivine whereas granite is. Sio 2 49 97 tio 2 1 87 al 2 o 3 15 99. Porosity and density this range of densities can also be attributed to a rock s porosity the amount of open space between mineral grains.

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

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. It is mostly made out of quartz mica and feldspar. Granite for example can have a quartz content anywhere between 20 and 60. You can also know more about granite and basalt reserves.

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. Granite is lighter in color than basalt. Basalt as a mafic rock contains more calcium oxide manganese oxide and iron compounds than granite.