WebThe mafic magma tends to assimilate felsic rock, becoming more silica-rich as it migrates through the lithosphere and changing into intermediate or felsic magma by the time it … WebThis gives the magma lots of time to react with the surrounding country rock. The mafic magma tends to assimilate felsic rock, becoming more silica-rich as it migrates through the lithosphere and changing into intermediate or felsic magma by the time it reaches the surface. This is why felsic magmas are much more common within continents.
Granitic magma is very silica-rich. t or f - Brainly.in
WebOther articles where granitic magma is discussed: igneous rock: Origin of magmas: Granitic, or rhyolitic, magmas and andesitic magmas are generated at convergent plate boundaries where the oceanic lithosphere (the outer layer of Earth composed of the crust and upper mantle) is subducted so that its edge is positioned below the edge of the … WebAug 1, 2001 · Summary. It was once thought that granitic magma was so viscous that it would take hundred of millions of years for granitic rocks to form. However, recent … ioptron 5kg counterweight
Granitic magma geology Britannica
Web6. (T F) A dike is a concordant tabular intrusive igneous body. 7. (T F) An electron possesses a neutral charge. 8. (T F) The Earth's interior, if subdivided into layers by composition, consists of the crust, mantle and core. 9. (T F) The inner and outer core are made of the same substance but have much different mechanical properties. 10.(T F ... WebObsidian is relatively soft with a typical hardness of 5 to 5.5 on the mineral hardness scale. In comparison, quartz (crystallized silicon dioxide) has a hardness of 7.0. Obsidian occurs only where geologic processes create volcanoes and where the chemical composition of the magma is rich in silica. Obsidian-bearing volcanoes are typically ... WebMar 13, 2024 · Mafic magma has relatively low silica content, roughly 50%, and higher contents in iron and magnesium. This type of magma has a low gas content and low viscosity, or resistance to flow. Mafic magma also … on the presumption of knowing how to read