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← GeographyWhich outcome occurs when pyroclastic density currents encounter water?
A)A lahar (mudflow) is generated.✓
B)Obsidian rock formation is accelerated.
C)Venturi effect initiates local upwelling.
D)Steam plume eruption prevents further flow.
💡 Explanation
A lahar is generated in this situation because a flood of mud and debris results from hot pyroclastic material rapidly mixing with water, therefore creating a dense, fast-moving mudflow, rather than a steam plume.
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