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Sedimentary Structures

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Sedimentary rocks tell stories about the geologic processes that made them. These processes are familiar—waves and currents, winds and weather, living things, landslides and more. All of them leave their signs in sedimentary structures like these.

Sedimentary rock types
Minerals of the Earth's surface

Images 1-12 of 19

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A simple case in shaleBedding, CaliforniaA natural cut-and-fillChannel Cast, CaliforniaKnobby afterthoughtsConcretions, NevadaSigns of roiling motionsConvolute Lamination, California
Signs of gravity and motionFlame Structure, CaliforniaFossil watermarksFlute Casts, MongoliaFormed on a slantForeset Beds, AustraliaBubble trails frozen in timeGas-Escape Structures, Colorado
Like little spirit levelsGeopetal Structure, WisconsinCoarse down, fine upGraded Bedding, CaliforniaSandy remnants of big stormsHummocky Cross-Bedding, UtahAlso called shinglingImbrication, Nevada

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