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← GeographyWhich outcome commonly results when viscous lava flows?
A)Development of steep-sided lava domes✓
B)Formation of extensive basaltic plains
C)Widespread deposition of fine ash
D)Creation of deep, broad calderas
💡 Explanation
Steep-sided lava domes develop because high viscosity resists flowing far; therefore, lava accumulates near the vent, forming a dome shape, rather than spreading thinly like basaltic flows, caused by high effusion rates.
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