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Author Question: How does a glacial fjord form? What does it tell us about climate change after glaciation? What ... (Read 61 times)

roselinechinyere27m

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on: Jul 15, 2018
How does a glacial fjord form? What does it tell us about climate change after glaciation?
 
  What will be an ideal response?

Question 2

Compare and contrast proglacial lakes and pluvial lakes.
 
  What will be an ideal response?


joanwhite

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Reply #1 on: Jul 15, 2018
Answer to Question 1

Answer: Erosion from valley glaciers transforms stream valleys into glacial troughs. In the case of fjords, the mountain valleys are near the coast. Glaciers erode their beds below sea level, and when the glaciers retreat, seawater flows in to submerge the valley. After the glaciation and subsequent sea level rise, the trough is further submerged.

Answer to Question 2

Answer: Proglacial lakes form along glacial margins from meltwater coming off an ice sheet. Pluvial lakes form from rainwater collecting in a basin during a cooler, more moist climate.


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