English: Hummocky cross-stratification. Book Cliffs, Utah. Pencil for scale. Just above the pencil is a curved crack, which is at the base of a 'hummock'.
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2009-08-25 18:52 Matt Affolter 2048×1536× (1404493 bytes) {{Information |Description = Hummocky-cross stratification. Book Cliffs, Utah. |Source = I (~~~) created this work entirely by myself. |Date = ~~~~~ |Author = ~~~ |other_versions = }}
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