In geology, ripple marks are sedimentary structures (i.e. bedforms of the lower flow regime) and indicate agitation by water (current or waves) or wind.
Read more about Ripple Marks: Defining Ripple Cross-laminae and Asymmetric Ripples, Wave-formed Ripple Marks, Definitions, See Also, References
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“The forest waves, the morning breaks,
The pastures sleep, ripple the lakes,
Leaves twinkle, flowers like persons be
And life pulsates in rock or tree.”
—Ralph Waldo Emerson (1803–1882)
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