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← GeographyWhich outcome is LEAST likely when laminar pyroclastic flows encounter uneven sloping terrain?
A)Flow transformations to turbulent surges
B)Erosion of unconsolidated surface materials
C)Thermal shock-induced rock spalling
D)Uniform deposition of fine ash layers✓
💡 Explanation
Uniform deposition is less likely because the **flow separation** caused by uneven terrain results in variations in velocity and deposition thickness; therefore, turbulent surges and channelized erosion occur rather than uniform layers because topography diverts the flows.
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