During effusive volcanic eruptions feeding lava flows at Kilauea, which effect occurs if degassing becomes limited?

A)Magma viscosity unexpectedly rises sharply✓

B)Laze generation decreases substantially at vents

C)Pyroclastic fountain height increases rapidly

D)Pahoehoe transitions quickly form less 'a'a'

💡 Explanation

Magma viscosity spikes because limited degassing prevents bubble formation, vital for internal pressure. Without bubbles, silicate chains entangle leading to higher effective viscosity; therefore option A, rather than altered chemical or structural behavior, affects effusion rates.

🏆 Up to £1,000 monthly prize pool

Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.

⚡ Enter Arena

During effusive volcanic eruptions feeding lava flows at Kilauea, which effect occurs if degassing becomes limited?

💡 Explanation

Related Questions