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Dun Briste, Ireland. "Sedimentary rock, laid down over millions of years at the bottom of the sea, like a slice of layer cake."

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The Art of Rock Folding by Ern Mainka--Geological rock folding in sedimentary layers on beach coastline, Croajingalong National Park, Victoria, Australia. Approx 5×3 foot section shown.

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Disharmonic folds in gneiss. Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks.

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Sedimentary layers with bands of hematite, magnetite (gray/black), and jasper (red) in banded iron formations of northern Michigan, USA.

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Oolites or cave pearls are sedimentary rocks formed from ooids, spherical grains composed of concentric layers.

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Sedimentary layers fold dramatically toward the ocean in Kejser Franz Joseph Fjord, Greenland

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