Which process primarily shapes the formation of a lava dome?

💡 Explanation

High lava viscosity promotes dome formation because internal pressure overcomes resistance, pushing the lava upwards via magmatic differentiation, therefore a rounded structure forms rather than a fluid flow, because low viscosity would allow wide spreading.

• Which topographic consequence arises when glacial abrasion enlarges cirques?
• Which consequence results when sediment deposition obstructs a meander?
• Which risk increases when a lava dam's volume exceeds its yield strength?
• Which landscape outcome is accelerated when overgrazing weakens soil structure?
• Which mechanism primarily drives stalactite formation from cave ceilings?
• Which outcome results when pyroclastic density currents deposit ignimbrite?