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volcanic rocks
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Is silica intrusive or extrusive?
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.
What sedimentary rock turns into the igneous rock basalt?
None. Basalt is formed by the rapid cooling of mafic (silica-poor) magma. It is not formed from sedimentary rock.
How would you classify a rock that has even amount of silica iron and magnesium?
mr barky van shnouzer
What is rhyolitic composition?
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.
What is a name of a sedimentary rock that becomes igneous?
metamorphic
Which of the igneous rock types has the lowest silica content?
Ultramafic igneous rock contains the least silica.
What color will igneous rock with high levels of silica be?
An igneous rock with a high level of silica will have a light color.
What igneous rock family contains the highest proportion of silica?
Felsic igneous rock contains the highest proportion of silica. Granites are felsic igneous rocks.
An example of an igneous rock low in silica is granite?
False. Basalt would be an example of an igneous rock with a low silica content.
Is silica an igneous rock?
No. Silica is not a rock; it is a component of many minerals found in all three rock types.
Relationship between silica content and overall color of igneous rock?
They both are the color of an igneous rock.
What is igneous rock color mainly determined by?
An igneous rock's color is mainly determined by its silica content.
What is the name of an igneous rock with low silica content that flows easily?
Basalt fits the above description.
How the silica content of Molten material affects the color of igneous rock's?
The more silica contained in a rock, the lighter in color it will be.
What are the terms felsic and mafic used by geologists to describe?
They are descriptive terms as to the relative silica content of igneous rocks. Igneous rock which is high in silica is referred to as felsic. Igneous rock which is relatively low in silica is referred to as mafic.
Which igneous rock has the lowest silica content?
Felsic Rocks
An igneous rock with a low silica content that flows easily?
No igneous rock flows easily. However, basaltic lava can flow easily, has a relatively low silica content, and turns into basalt, the rock, when solidified.
