Which outcome occurs when volcanic ash flows compact?

💡 Explanation

Hot ash compacts into ignimbrite through welding because the high temperatures fuse the particles together; therefore, a solid rock layer forms, rather than a slurry developing due to mixing with water.

• Which mechanism significantly increases sediment deposition rates at deep fjord basins with seasonal meltwater influx?
• Which increased risk occurs when increased pore fluid pressure exists along a fault line near a silicic magma chamber?
• Which outcome occurs when stress exceeds granite's frictional limit along a transform fault?
• Which risk increases when constructing large impermeable structures upon an alluvial plain?
• Which risk increases when warming temperatures accelerate thermokarst formation in Arctic permafrost regions?
• Which mechanism causes the deflection of major oceanic streams in the Northern Hemisphere?