Respuesta :
Igneous rock composition however is dictated by the amount of silica present in the rock. high silica content will result in a Felsic composition.
A silicate mineral, magma, or rock that is abundant in lighter elements including silicon, oxygen, aluminum, sodium, and potassium is referred to as felsic. In comparison to mafic magma/lava, felsic material has a greater viscosity.
The term "felsic" in geology refers to igneous rocks that are highly abundant in the components that go into making feldspar and quartz. Felsic rocks often have light colors and specific gravities under 3. Granite is the most typical felsic rock. Rocks classified as felsic have a silica concentration greater than 65 percent according to a frequently used categorization system. Rhyolite and granite are felsic rocks, having an average silica concentration of roughly 72%, according to compilations of several rock studies.
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