Which outcome occurs when subsurface magma composition changes during effusive eruption?

💡 Explanation

Lava dome formation occurs because increased silica encourages viscous SURFACE _degassing_, therefore lava quickly solidifies in the vent, rather than generating lateral pyroclastic flows. Lahars needs additional moisture source involvement to occur.

• Which outcome results when strong currents erode sediment supporting coastal stacks composed of limestone?
• Which risk increases when increased glacial erosion coincides with intense wind deflation?
• Which outcome occurs following substantial coastline erosion near sea stacks?
• Which risk increases when soil-forming processes exceed equilibrium?
• Which climatic effect results when persistent stationary upper-level systems disrupt Hadley cell circulation?
• Which outcome occurs when increased glacial meltwater enters subglacial stream systems in Greenland?