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Found 4 results

  1. Aussieopal

    Fossil or not?

    Hi everyone, I am very new to this and have an extremely vivid imagination so please bear with me I found this piece of limestone in lighting ridge Australia and I can't help but see what looks to be a palm leaf shape imprinted into it and on closer examination it looks like a small feather imprint also. I hope my images are helpful. Ready to be told it's just a rock
  2. Rebel rebel

    ID help please...

    Just looking to identify this rock I found on a beach in southern Ireland. I have no clue about fossils but thought this looked interesting and wanted to know more. Thanks!
  3. Blair County Pennsylvania (USA) (Private property) ..... Recently I explored some heaps of old mine talus which I think is the whitish sandstone from the Pottsville Formation. These rocks commonly have imprints in various degree of detail, especially cordaites and lycopods. The pics below show one large boulder with what I think is a very large imprint of sigillaria. The tape shows 8 feet. I'll readily admit that I'm a noob and susceptible to seeing what I want to see. From my pics someone who knows 'way more than I will ever learn opined the "ridges" are really geochemical in nature. I think they were implying that being mineralogically different they were more resistant to erosion. I'd like to learn more about what to do to followup, and try to verify one interpretation or the other? FWIW, I can't help but think of how I've never seen similar ridging in this formation, assuming I correctly identified the source as Pottsville formation sandstone. There's a lot of this material in Blair/Cambria old mine areas. The leaf scars, if they're there, don't show up in great detail. But then again, I have much smaller samples where you can see leaf scars clearly on one part of the rock and they fade out in another. The pics below are either from early morn and noon, so sun is at different angles. The way I read this rock, the cast is more or less lying in the bedding plane, and there is a calamites along one side. Short of microscopic or chemical analysis in the lab, is there anything more I can do in the field to help firm up an ID one way or the other? Very consistent Some exfoliation allowing a peek at a cross section A Calamites (sp) next to the maybe-Sigillaria Exposed back and back-right corner of boulder, trying to get an idea of bedding planes (This series of three starts at the back side and moves around to the left as we face the rock Is there something else I could do or look for when I return, to help verify its either a Sigillaria imprint, or a (boo hoo hoo) another "Foss-iLarm"?
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