piranha Posted September 6, 2014 Share Posted September 6, 2014 ...Remember a lot of people who come here only have a vague idea of what is going on, so give a technical explanation for one audience and then "common man" explanation for everybody else... My explanation wasn't technical at all. The fact that Cruziana ranged well into the Mesozoic reminds us that ichnofossils are always difficult to ascribe to a specific maker. Link to comment Share on other sites More sharing options...
piranha Posted September 9, 2014 Share Posted September 9, 2014 Scott, good stuff as always! I was wondering and wandering as I do quite often....Any comments/mention from the sedimentologist on what the polished circular area might have been caused by? I've seen some interesting large bubbling in algal mats.....Regards, Chris Hi Chris, Conchoidal fracture is the answer on the circular feature. He also added an observation that the Kinneyia is strongly silicified. 1 Link to comment Share on other sites More sharing options...
mstimson29 Posted January 8, 2015 Share Posted January 8, 2015 It looks like a Microbial Induced Sedimentary Structure to me. Microbial wrinkles called Kinneyia Link to comment Share on other sites More sharing options...
piranha Posted January 9, 2015 Share Posted January 9, 2015 It looks like a Microbial Induced Sedimentary Structure to me. Microbial wrinkles called Kinneyia Better late than never! It always helps to check the entire thread as this ID was already answered a few months ago back on the second page of this thread (post number 32). Link to comment Share on other sites More sharing options...
Dromiopsis Posted November 28, 2017 Share Posted November 28, 2017 hello, I just want to add some Kinneyia found las spring in Sweden, from the Mickwitzia sandstone, lower cambrian, we can see very well that the rheology of the top of the ripple marks has changed. Gallery pictures http://www.flickr.com/photos/supergrevling/ Link to comment Share on other sites More sharing options...
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