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View Diary: Glacier National Park (Photos) (152 comments)

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  •  They are amazing mountains, with their (3+ / 0-)
    Recommended by:
    blue armadillo, yesdevkmem, Ojibwa

    very strong, flat lying 1.4 billion year old sedimentary rocks thrust over the Cretaceous age shale that is exposed at the base of the range on the east side, and for hundreds of flat miles to the east. Thanks for the beautiful photos.

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