Hidden Valley Erratic EarthCache
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This earthcache is located in a quiet City of Calgary park.
A glacial erratic or simply, an erratic, is a rock that is out of place and became so because it was transported by a glacier from its original location and deposited upon dissimilar bedrock. The Foothills erratics are hard and resistant grey to pink pebbly quartzite. Their source is half a billion year old rocks in the Main Ranges of the Rocky Mountains in Jasper National Park. They commonly rest on less resistant sandstone or mudstone formations that underlie the Foothills. The bedrock of the Foothills is one-fifth the age of the quartzite.
Where similar types of erratics are found to be distributed in a linear or ribbon-like pattern, they are referred to as an erratics train.
The Foothills erratics train of Alberta can be traced more than 580 km along the eastern edge of the Rocky Mountain Foothills from McLeod River in the north to the international border in the south.
TO LOG THIS CACHE: you must email to the owner the estimated size (length, width) of the hidden portion of this erratic. Plus post a photo of you and your GPS at the site.
Bonus Question: DO you know why developers are required to leave these and can not remove them?
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Treasures
You'll collect a digital Treasure from one of these collections when you find and log this geocache:
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