Which igneous rock or magma has the lowest silica (sio2) content? granite basalt andesite
Which igneous rock or magma has the lowest silica (sio2) content?
granite
basalt
andesite
Homework Answers
SOLUTION:-
Ans:- Basalt has the lowest silica content because it has 45 to 55% silica content and that's why it belongs in mafic category and it composed of plagioclase and pyroxene minerals.
** Granite has the highest silica content because it has almost 72% silica content and it belongs in felsic category. Granite is composed of feldsper and silica.
** Andesite is belonged in intermediate category and it has 55 to 65 % silica content. It is just below of felsic category. Medium amount of silica is present in andesite rock.
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Which igneous rock or magma has the lowest silica (sio2)
content?
granite
basalt
andesite
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O The silica content of lava is higher. The viscosity of magma is higher Lava is found inside the Earth, magma outside Lava is found outside the Earth, magma inside What are the two most abundant elements in the Earth's crust? O Carbon and Silicon Silicon and Oxygen Hydrogen and Helium Aluminum and Calciunm
Sometimes we have to take into account IGNEOUS INTRUSIONS. These are masses of magma that formed within the crust keep in mind that magma bodies do not usually follow the principle of superposition. Take a look at the diagrams below and answer the following questions ground surface a) Which sedimentary layers are younger than this granite intrusion? List all that apply. b) Which sedimentary layers are older than this granite intrusion? List all that apply. GRANITE c. Based on the...
4) is a major dissolved volatile constituent in both magmas and volcanic gases. A) Water B) Carbon monoxide C) Hydrogen chloride D) Methane 5) Which one of the following shows the correct order (left to right) of decreasing magma viscosity? A) rhyolite, andesite, basalt B) andesite, rhyolite, basalt C) basalt, rhyolite, andesite D) basalt, andesite, rhyolite 6) Why do magmas rise toward Earth's surface? A) Magmas are more viscous than solid rocks in the crust and upper mantle. B) Most...
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