Which outcome follows rapid Hawaiian lava flow cooling?

💡 Explanation

Columnar jointing occurs because thermal contraction during rapid cooling establishes stress gradients, then fracture propagation creates geometric columns, therefore columnar joints appear rather than smooth surfaces or altered crystallization. Pahoehoe forms with slow cooling.

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• Which erosional consequence results when fan sediment supply diminishes?
• Which outcome occurs when vegetation loss destabilizes alluvial terraces?
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