Sunday, July 5, 2015

June 5, 2015 Pedalling the Ancient Shoreline

With a few free hours and a beautiful morning (25C/77F, 61% humidity) I pedal 34.7 km (21.5 mi) around a double country block (taking me through the village of Inverhuron, past Bruce Nuclear Power Generation, and through Underwood) at an average pace of 20 kph (12.4 mph). Successful completion of five out of five training days. 
The Photo:
This very short, steep incline is more than a briefly challenging biker moment. It tells an ancient story about my neighbourhood. The present Lake Huron is actually the fourth and smallest of four prehistoric lakes that have graced these shores. It all started when the Wisconsin Glacier retreat a bizillion years ago and dug out the entire Great Lakes Basin as it waved goodbye. The big hole around here first filled with Lake Nippissing (massively huge), then it receded to create Lake Algonquin (slightly less massively huge), which receded to create Lake Wisconsin (still impressively huge), and finally (at least finally to us), it receded leaving our lovely Lake Huron. I can identify two of the distinct shoreline slopes on our coastline. I suspect the other two are more subtle.
 

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