Which morphological change dominates when high-viscosity rhyolitic lava cools?

💡 Explanation

The formation of a lava dome dominates, because the high viscosity inhibits flow, driving vertical extrusion via PLUG FLOW rather than spreading; therefore a steep-sided dome forms, rather than a flatter shield volcano shaped by fluid lavas.

• Which outcome occurs when intense orographic lift acts upon humid air masses moving through narrow mountain stream valleys?
• Which environmental transformation results when groundwater saturation exceeds cave sediment's infiltration capacity?
• Which change directly causes alluvial fan deposition at a mountain range exit point?
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• Which outcome occurs from increased glacial meltwater within cirques?
• Which phenomenon minimizes average displacement during large transform fault earthquakes?