allybelle2018
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Which statement about basaltic magma is false?
a. It forms when rocks in the upper mantle melt
b. It contains small amounts of silica
c. It has high viscosity
d. It forms on oceanic and continental crust

Respuesta :

JDOH19283

Basaltic magmas tend to be fairly fluid (low viscosity).

So, C.

The statement, that is, basaltic magma has high viscosity is false.  

• The molten rock enriched in magnesium and iron and less amount of silica is known as the mafic lava or basaltic magma.  

• The density of basaltic magma is very high and thus it gets stopped in the continental crust and get crystallize. Thus it forms on oceanic and continental crust.  

• Basaltic magma is generally produced by direct melting of the mantle part of the Earth, that is, the part of the Earth underneath the outer crust.  

• The viscosity of basaltic magma is very less, that is, it exhibits low viscosity. However, it is 10000 to 100000 times more viscous in comparison to water.  

Thus, the false statement is option c.

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