Monday, 12 August 2013
Fossil triassic sand ripples
My Daughters found these pieces at the weekend, ime sure there Triassic sand ripples.
7 - The larger piece has been discoloured by the river and weathering, and may even have a secondary mineral coating, but after breaking an under layer free I can say it is certainly Mercia mudstone.
8 - The examples in images 8 - 10 show Triassic fossil sand ripple marks from North America, I have not yet viewed a Triassic example from the UK.