Perfect example of a #kettle #pothole #punchbowl a depression formed by retreating #glacier The kettles are formed as a result of blocks of ice left behind by retreating glaciers, which become surrounded by sediment deposited by meltwater streams. The ice melts leaving behind the depression. At #drewuniversity this was called the Punch Bowl #madison #nj #newjersey #morriscountynj — view on Instagram http://bit.ly/2JRdvBu
from Tumblr https://gardenstatepics.tumblr.com/post/185297797221
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