Which outcome occurs when the viscosity of rhyolitic lava decreases within a stratovolcano during a fissure eruption under increasing hydrothermal pressure?

💡 Explanation

Higher hydrothermal pressure combined with decreased rhyolitic lava viscosity promotes the disintegration and explosive release of gases in magma; therefore, pyroclastic density currents escalate, rather than generating stable lava flows due to reduced resistance to expansion.

• Which topographic consequence results from the subduction of an oceanic plate beneath a continental plate lacking sufficient sediment?
• Which pattern results when trade winds approach continental coastlines?
• Which phenomenon strongly mediates the magma composition produced during oceanic plate subduction under a continent?
• Which consequence results when isostatic rebound lags erosion in island archipelagos?
• Which volcanic outcome arises when felsic magma stalls?
• Which mechanism creates crevasse splays when floodwater overtops a natural levee along a river?