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← GeographyWhich outcome commonly results when basaltic lava encounters seawater?
A)Formation of pillow lava structures✓
B)Creation of explosive pyroclastic surges
C)Development of extensive lava tubes
D)Solidification into smooth pahoehoe flows
💡 Explanation
Pillow lava forms during submarine eruptions; rapid cooling leads to a bulbous shape because the water quenches the lava's exterior, creating a solid crust, rather than allowing tube formation or smooth flows; thus, pillow structures occur underwater.
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