0
How does the silica content of an intermediate rock compare with that of felsic and mafic rock?
Wiki User
∙ 8y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What igneous compositions has the lowest silica content mafic ultra mafic intermediate or felsic?
Ultra mafic rocks have the least amount of silica.
What type of magna has a low silica content?
felsic
Which igneous rock has the lowest silica content?
Felsic Rocks
Which property of magma will change the viscosity?
Silica content determines viscosity. The higher the silica content the more viscous (slower moving). Ultramafic <45% silica Least viscous Mafic 45-52% Silica Intermediate 53-65% Silica Felsic >65% Silica Highly viscous
What is the silica content of magma that would result in pyroclastic flow?
it is normally intermediate flow because of the silica content.
Which rock is most felsic out of rhyolite andesite and basalt?
Of these Rhyolite has the highest silica content.
What igneous compositions has the lowest silica content mafic ultra mafic intermediate or felsic?
Ultra mafic rocks have the least amount of silica.
What is the difference between felsic intermediate and mafic igneous rocks?
Silica content increases from mafic to felsic, and Mg and Fe content decreases. These differences affect things such as viscosity, density and colour. Felsic magmas are the most viscous and least dense, and felsic rocks are the lightest in colour.
What type of magna has a low silica content?
felsic
Which igneous rock has the lowest silica content?
Felsic Rocks
Which property of magma will change the viscosity?
Silica content determines viscosity. The higher the silica content the more viscous (slower moving). Ultramafic <45% silica Least viscous Mafic 45-52% Silica Intermediate 53-65% Silica Felsic >65% Silica Highly viscous
What is the silica content of magma that would result in pyroclastic flow?
it is normally intermediate flow because of the silica content.
Is felsic lava thick?
Felsic lava is a slower moving lava, with high silica content. Most felsic lava deposits as granite, granite, muscovite, and orthoclase.
Why is the lava mostly mafic at divergent plate boundaries and intermediate and felsic at convergent plate boundaries?
Mafic magma has extremely high ferromagnesian content, produced by decompression melting. As the plates move apart, mantle rises to fill the void. As it melts, it forms mafic magma. Where plates are meeting, the compression of crust forms magma with higher silica content, thus forming felsic and intermediate magmas.
Is quartz mafic?
No, we call something mafic if it has a relative low silica content. As quartz is 100% silica, it's not mafic, but felsic.
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.
What magma is rich in feldspars and silica?
no its the least silica rich of granitic and andesitic magma.
