Which risk increases when rapidly flowing volcanic lava transitions facies?

💡 Explanation

When fluid lava rapidly cools, viscosity increases and can induce flow diversion; therefore, this leads to easier channel avulsion which threatens settled areas, because the reduced flow stability decreases flow control, rather than other geomorphic changes.

• Which risk increases where strike-slip faults intersect aquifers?
• Which geological effect arises from the constant stress-and-release mechanism along a transform fault boundary intersecting continental crust?
• Which mechanism significantly reduces river flow velocity immediately adjacent to a natural levee?
• Which outcome occurs when prolonged saturation weakens the foundation beneath a riverside levee?
• Which outcome occurs when silicate rocks undergo hydrolysis?
• Which mechanism initiates thermohaline circulation when surface seawater freezes near polar regions?