❓ why
Why do some lakes form in volcanic craters?
Quick Answer
Volcanic craters can fill with rainwater, groundwater, or melted snow after eruptions or collapse leaves a natural basin.
The Full Story
When a volcano erupts explosively or its summit collapses, it can leave behind a crater or caldera. If the basin is deep enough and sealed by rock or lava, water can collect there over time. Rain, snowmelt, and groundwater then maintain the lake. Crater lakes are often very clear, but some are acidic or chemically unusual because of volcanic gases and minerals. Crater Lake in Oregon, formed in the collapsed Mount Mazama about 7,700 years ago, is a famous example.
Key Facts
1.Crater lakes form in volcanic basins
2.Crater Lake formed about 7,700 years ago
3.Volcanic gases can affect lake chemistry
YouTube Angle
Suggested video title for this topic:
"How a volcano can become a lake"
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