[[file:1024px-WaveRipple.JPG|thumb|300px|Wave ripple or symmetric ripple, from Permian rocks in Nomgon, Mongolia. Photo by [https://en.wikipedia.org/wiki/User:Qfl247 Matt Affolter].]]
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==Useful links==
==Useful links==
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* [[wikipedia:Paleocurrent|Paleocurrent]]
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* [[wikipedia:Paleocurrent|Wikipedia]]
* [http://www.hs.umt.edu/geosciences/faculty/hendrix/g432/g432_L12.htm University of Montana Lecture]
* [http://www.hs.umt.edu/geosciences/faculty/hendrix/g432/g432_L12.htm University of Montana Lecture]