donbenderphotography
FollowMount Marquette Glacial Striations
The deep grooves in this whitish ultra-hard type of rock called quartzite (this one named the Mesnard quartzite) are caused by the glaciers that passed over thi...
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The deep grooves in this whitish ultra-hard type of rock called quartzite (this one named the Mesnard quartzite) are caused by the glaciers that passed over this formation around 10,000 years ago.
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