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← GeographyWhich outcome occurs when a volcanic eruption's viscous lava flow enters the ocean at a subglacial boundary?
A)Formation of hyaloclastite cones efficiently✓
B)Development of extensive basalt plains gently
C)Creation of shield volcanoes calmly
D)Fast construction of composite volcanoes rapidly
💡 Explanation
Hyaloclastite cones form because rapid cooling and fragmentation via thermal shock overwhelm the bonding capacity; therefore, glassy volcanic material is produced abundantly, rather than consolidated flows on land under slower cooling conditions.
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