Which outcome occurs when seasonal meltwater floods a glacial valley?

💡 Explanation

Varves form in proglacial lakes because seasonal changes in sediment input due to meltwater drive **sedimentary layering**. Therefore, distinct light and dark layers characterize varves, rather than other erosional glacial features or unrelated groundwater dynamics.

• Which effect characterizes stream morphology along an active transform fault boundary?
• Which mantle process maintains long-term subduction rates at convergent plate boundaries?
• Which risk escalates on steep slopes in Arctic regions undergoing active solifluction?
• Which outcome occurs during sediment starvation within a littoral cell?
• Which risk increases when an alluvial river's sediment load is drastically reduced by upstream dam construction?
• Which geological consequence results when accumulated stress overcomes frictional resistance along a fault-line?