Which lake-forming outcome occurs when accumulated tephra redirects stream flow?

💡 Explanation

Alluvial fan development leads to lake formation because sediment accumulation, influenced by tephra deposition, redirects water flow, creating a barrier and impounding water upstream; therefore, alluvial fan damming is the outcome, rather than glacial or isostatic processes.

• Which outcome results when joint density increases near sea stacks?
• Which change results in coastal regions when isostatic rebound completes?
• Near stratovolcanoes, which pyroclastic flow outcome results from increased silica content?
• After prolonged drought, which topographical consequence develops because of aeolian deflation?
• Which consequence results when soil experiences increased rates of bioturbation?
• Which mechanism causes a sea stack to eventually collapse?