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Showing results for tags 'ripple'.
Found 5 results
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I’m very curious about these “ripple marks” that I have seen posted a few times on the forum. From what little research I have been able to do (so far...) they seem to be caused by wind or water erosion of the rock. However, there is mention of them possibly being fossilized rippled sediment from the floor of a body of water. So... are these geological erosions or some type of fossilized evidence of water movement? I can see how the erosion would work, but wouldn’t the sediment be compressed during lithification/fossilization and destroy the details if it was from a body of water
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We found this yesterday outside of Sedan Kansas on a 4-H Geology field trip. It was with a thinner layer of sandstone just below a thick layer of Ireland sandstone. One of the leaders thought it was ripple marks. I also thought it looked like ripple marks but wanted a second opinion. We would hope to be able to display this in her geology exhibit as a fossil if it is truly ripple marks.
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Found this on my phone from two years ago not sure what i am supposed to be looking at? Threw water on it for some reason. Whole rock is about a foot long.
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From the album: FreeRuin's Finds
Marks left by the movement of a river or stream in the early Jurassic. Hartford Basin Portland Formation Massachusetts -
I have had too much time on my hands and have been looking at this forum to much. I started to see fossil every where. I found some ripples bed fossil in the Wirrel in the uk. But can anyone see anything else hear. Thanks you for all your great help as always. Bobby
