Are felsic or mafic magmas more explosive

Felsic magmas as they contain more silica molecule (si02) and are therefore more viscous (cannot flow as easily as mafic magmas) meaning more pressure can build up behind the magma before an eruption happens. Mafic magmas tend to produce thinner, less explosive magmatic eruptions.

SG

Related Geology A Level answers

All answers ▸

Describe how you can distinguish between intrusive and extrusive igneous rocks?


What is the difference between Oceanic and Continental Crust? What happens to the Oceanic crust when they collide?


Which fossil group will show 5-fold (Pentameral) symmetry, is composed of plates, a mouth and an anus on opposite surfaces?


Describe how a delta forms.