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Peridotite, a type of ultramafic rock composed largely of the mineral olivine, has the least silica.
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What does high silica content magma form?
When it cools and crystallizes into rock, the rock will be described as felsic igneous rock. Examples of felsic igneous rocks are granite, rhyolite, and pumice.
Does magma having a silica content of 50 percent is more mafic than one having a silica content of 70 percent?
Correct. The lower the silica content, the more mafic the magma is.
Magma can be classified according to its content.?
silica
What is a magmas viscosity related to?
The silica content. A higher silica content results in a more viscous magma.
This type of magma has low silica content?
There are three types of magma that contains silica. Basaltic Magma has 50 percent silica, Andesitic Magma has 60 percent silica, and Granitic Magma has 70 percent silica.
What is the silica content of magma that has low viscosity?
low silica content (basaltic magma)
What is silica content of magma that has a low viscosity?
low silica content (basaltic magma)
Igneous rocks that are dense and dark colored they form from magma that is rich in iron and magnesium and poor in silica?
Igneous rocks that are dense and dark-colored are called basaltic rocks. They are formed from magma that is rich in iron and magnesium and poor in silica content.
What is a magma's viscosity directly related to?
The silica content. A higher silica content results in a more viscous magma.
What does high silica content magma form?
When it cools and crystallizes into rock, the rock will be described as felsic igneous rock. Examples of felsic igneous rocks are granite, rhyolite, and pumice.
Suppose a volcano that is about to erupt contains mafic magma. The mafic magma has a very low silica content. what types of igneous rocks will the volcano most likely form?
basalt
How can bowens reaction series determine the silica content in magma?
Higher silica contents will be in the igneous rocks that form with lower temps. Ones that form earlier in the series like olivine have lower percentages of silica.
Does magma having a silica content of 50 percent is more mafic than one having a silica content of 70 percent?
Correct. The lower the silica content, the more mafic the magma is.
Does the increase in silica increase the viscosity of a magma?
it is normally intermediate flow because of the silica content.
How does the silica content of molten material effects the color of igneous rock?
Silica in molten material tends to crystallise as quartz, which is white or mostly pale in colour. So felsic rocks (from silica-rich magma) tend to be pale, while mafic rocks (from silica-poor magma) tend to be dark in colour.
Magma can be classified according to its content.?
silica
What effect does silica content have on the charactersitics of magma?
The silica can make the magma flow slower and also can make the magma's color lighter.
