What eruptive outcome is most likely when highly viscous lava encounters groundwater?

💡 Explanation

A phreatomagmatic explosive eruption occurs because rapid heating causes Flash Vaporization of groundwater. This instantaneous phase transition creates extreme pressure Cookoff, therefore producing a powerful explosion, rather than lava flow slowing.

• Which landscape consequence occurs when desert pavements undergo deflation?
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• Which risk increases when a river's sinuosity nears cut-off?
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