volcanic rocks
The terms intrusive and extrusive apply to the formation of igneous rocks. Silica is a chemical component of a wide variety of minerals found in many types of igneous, metamorphic, and sedimentary rock. All igneous rocks, both intrusive and extrusive, contain silica.
None. Basalt is formed by the rapid cooling of mafic (silica-poor) magma. It is not formed from sedimentary rock.
mr barky van shnouzer
metamorphic
It contains about 70% Silica(SiO2)Added:Rhyolite, a gost town town in South-Nevada, is named for rhyolite, an igneous rock composed of light-colored silicates, usually buff to pink and occasionally light gray. It belongs to the same rock class, felsic, as granite but is much less common.
Granite is actually high in silica, which is why it is considered a felsic igneous rock. An example of an igneous rock low in silica is basalt, which is mafic in composition and contains less silica than granite.
An igneous rock with a high level of silica will have a light color.
Ultramafic igneous rock contains the least silica.
Felsic igneous rock contains the highest proportion of silica. Granites are felsic igneous rocks.
No. Silica is not a rock; it is a component of many minerals found in all three rock types.
An igneous rock's color is mainly determined by its silica content.
The more silica contained in a rock, the lighter in color it will be.
Basalt is an igneous rock with low silica content that flows easily due to its fluid nature when erupted. It is commonly found in volcanic areas and is dark in color.
I would expect a light gray igneous rock to be rich in silica. Light gray color in igneous rocks is often associated with high silica content, which is typical of felsic or granitic compositions.
No, rhyolite is a silica-rich volcanic or igneous rock.
Igneous rocks that are medium colored and have no silica are called mafic rocks. They are mainly composed of magnesium and iron.
Basalt.