The average composition of rocks comprising a large composite cone or stratovolcano is similar to a(n)________magma.

Question

Quizplus · Accepted Answer

Large composite cones or stratovolcanoes are typically associated with explosive eruptions, which are caused by the buildup of gas-rich and viscous magma. Andesitic magma is the most common type of magma associated with these volcanoes, as it has intermediate viscosity and gas content. Rhyolitic magma is also a possibility, but it is less common in large composite cones. Ultramafic and basaltic magmas are not typically associated with explosive eruptions or large composite cones.

The Average Composition of Rocks Comprising a Large Composite Cone