Which outcome occurs when flowing basaltic lava encounters groundwater?

💡 Explanation

A phreatomagmatic eruption results because the rapid heating of groundwater by lava leads to explosive steam generation. This violent interaction causes fragmentation of lava, forming a tuff cone, rather than effusive flows alone.

• Which soil outcome increases when parent material fractures permit greater rainwater penetration?
• Which geological process most directly forces rapid uplift during an earthquake?
• Which factor drives oxbow lake formation disproportionately during glacial retreats?
• Which climate consequence results when trade winds weaken significantly during an El Niño event?
• Which mechanism limits development suitability within a floodplain filled with uncompacted alluvial sediments during seismic activity?
• Which ocean phenomenon results when offshore winds drive surface waters away from a coastline?