Big Rock (glacial erratic)

Big Rock (glacial erratic)

Jesse Russell Ronald Cohn

     

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ISBN: 978-5-5109-5523-1

High Quality Content by WIKIPEDIA articles! Big Rock (also known as Okotoks Erratic) is a glacial erratic situated between the towns of Okotoks and Black Diamond, Alberta, Canada (18 kilometres south of Calgary). The 15,000 tonne (16,500 short ton) quartzite boulder is the world`s largest known glacial erratic.

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