Near stratovolcanoes, which pyroclastic flow outcome results from increased silica content?

💡 Explanation

Increased silica promotes higher viscosity; this results in increased internal friction hindering lateral spread with the mechanism being increased viscosity of the magma. Therefore, ash and rock are concentrated rather than the opposite, under other magmatic conditions.

• Which erosion dominates when seasonal wave energy intensifies at coastal headlands?
• Which mechanism primarily sculpts ventifacts in periglacial environments?
• Which process initiates channel avulsion in an alluvial plain with high sediment load?
• Which outcome primarily occurs via wave refraction around a coastal headland featuring sea stacks?
• Which outcome occurs when polar jet stream meanders increase?
• Which risk increases as a coastal lahar increases momentum?