Answer
Proglacial lakes and pluvial lakes are two distinct types of lakes that differ in their formation processes and geographical settings. Proglacial lakes form before a glacier due to the accumulation of glacial meltwater in depressions or basins. These lakes are commonly found where glaciers are actively melting or retreating. Fed by the meltwater from the glacier, proglacial lakes often have a milky or turbid appearance due to fine sediment known as glacial flour. The size and extent of proglacial lakes can change as the glacier melts or retreats. Lake Louise in Banff National Park, Canada, is an example of a proglacial lake.
On the other hand, pluvial lakes, also known as interglacial lakes, form in regions previously covered by glaciers but have since become ice-free due to a warmer climate. These lakes are created by an increase in precipitation rather than glacial meltwater. Pluvial lakes occur when the amount of precipitation exceeds evaporation, filling depressions or basins that were left by previous glacial activity. They typically occur in areas that experienced glaciation during the Ice Age but have transitioned to a more arid or semi-arid climate. The Great Salt Lake in Utah, United States, is an example of a pluvial lake.
Work Step by Step
As per text in section 18.5.
