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Showing posts from November, 2014

Northwest Territories Waterfall Tour

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Greetings, fellow explorers! This week, the Leif and Natalie Show visits the distant NORTHWEST TERRITORIES, deep in the heart of a tiny North American country known as Canada. As always, we journey out in search of adventure and whitewater. Here is the video of this episode:
NWT Waterfall Tour from Leif Anderson on Vimeo. HD! Full screen! Now!

This week's quest was simple: investigate the mythical waterfalls on the many creeks surrounding the Great Slave Lake. These waterfalls are caused by isostatic rebound. The thick ice sheet laying over the continent during the ice age was heavy enough to depress the earth's crust around the Great Slave Lake. After it melted, the crust rebounded upward. The process of rebound continues today. The creeks and rivers in the region began to incise downward into the uplifting terrain, and the usual method of erosion is for waterfalls to form and gradually migrate upriver. Fortunately for us, there happens to be a highway that circles…