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Which outcome occurs when prolonged volcanic fissure eruptions saturate sloping terrain?

A)Formation of extensive pahoehoe lava flows
B)Development of thick laterite soil horizons
C)Initiation of large debris avalanches
D)Widespread deposition of varved sediments

💡 Explanation

The saturation reduces the shear strength of the slope, leading to a debris avalanche because the mechanism is pore pressure increase by increased saturation on slopes causing instability. Therefore, avalanches result, rather than slow soil formation or lava solidification.

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