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← GeographyWhich consequence results when silica content reduces lava flow?
A)Increased viscosity favors explosive eruptions
B)Shield volcanoes form over broad terrains✓
C)Basalt plains allow for continuous streamflow
D)Pahoehoe textures dominate volcanic landscapes
💡 Explanation
Shield volcanoes form because low silica lava promotes fluid, effusive eruptions, rather than viscous, explosive ones via decreased polymerization; therefore, flatter structures dominate, rather than strato-volcanoes, caused with eruptions involving gas-charged rhyolitic material.
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