Which crustal deformation results when high-viscosity lava cools within volcanic vents?

💡 Explanation

Lava domes result from the accumulation of viscous lava that cannot flow far— viscous lava solidifies within the vent causing uplift because pressure from magma forces the cooled lava upwards. Shield volcanoes form from fluid lava, therefore, that spreads out rather than accumulates.

• Along strike-slip faults, which mechanism causes formation of sag ponds in arid environments?
• Which outcome results when pore fluid pressure increases along faults?
• Which atmospheric effect causes the formation of distinct desert regions around 30 degrees latitude?
• Which risk dramatically increases after extensive tephra deposition?
• Which risk increases for polar exploration when experiencing albedo effect?
• Which long-term outcome results as a tectonic valley fills with sediment eroded through hydraulic action from a central, elevated source?