geoguy Posted May 17, 2017 Share Posted May 17, 2017 I found this rock in the soil under the root of a maple tree that I am removing. I live in Ozaukee county in Wisconsin. Any ideas what this could be/or if it is even a fossil? Link to comment Share on other sites More sharing options...
Kane Posted May 17, 2017 Share Posted May 17, 2017 Welcome to the forum This could be geologic, but it certainly has an interesting whorl patterning. Wait for others to chime in... ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
JohnBrewer Posted May 17, 2017 Share Posted May 17, 2017 Welcome aboard! I agree with Kane. A really nice find but I'm sure geological. John Map of UK fossil sites Link to comment Share on other sites More sharing options...
Pumpkinhead Posted May 17, 2017 Share Posted May 17, 2017 Ozaukee county (located on the bottom left of the map) appears to be Silurian and Devonian. This being said, the specimen seems slightly rounded and could have been transported from somewhere else. If this item is not geologic it could perhaps be a stromatolite or some other organism that is prone to leave concentric layers Link to comment Share on other sites More sharing options...
Fossildude19 Posted May 17, 2017 Share Posted May 17, 2017 Definitely geologic - Septarian crack patterns/structures. See this thread for an item with similar patterning. Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Pumpkinhead Posted May 17, 2017 Share Posted May 17, 2017 20 minutes ago, Fossildude19 said: Definitely geologic - Septarian crack patterns/structures. See this thread for an item with similar patterning. Touché, nature. Link to comment Share on other sites More sharing options...
abyssunder Posted May 17, 2017 Share Posted May 17, 2017 I agree! I'm pretty sure about a geological oddity. The patterns remind me of Liesegang rings in differential weathering, but I could be wrong. " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
gobbler716 Posted May 17, 2017 Share Posted May 17, 2017 Either way, it's a cool find! Link to comment Share on other sites More sharing options...
Rockwood Posted May 17, 2017 Share Posted May 17, 2017 Fossils are never found under maple tree roots Link to comment Share on other sites More sharing options...
abyssunder Posted May 17, 2017 Share Posted May 17, 2017 May be something similar to this: excerpt from here " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Innocentx Posted May 18, 2017 Share Posted May 18, 2017 It also reminds me of what a cone in cone geologic structure would look like after weathering. I assume this is sedimentary rock. https://en.wikipedia.org/wiki/Cone-in-cone_structures http://www.wvgs.wvnet.edu/www/museum/musecone.htm 2 hours ago, abyssunder said: I agree! I'm pretty sure about a geological oddity. The patterns remind me of Liesegang rings in differential weathering, but I could be wrong. These Liesegang rings are a wonder. "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
geoguy Posted May 23, 2017 Author Share Posted May 23, 2017 I submitted to pictures to a local geology museum, UW-Madison, and they replied: "The patterns are geological in origin - they are iron deposits in sandstone. The iron gets laid down in layers as water flows through the rock and then those iron-rich layers are stronger than the surrounding sandstone so they stick up above the surface of the rock as it erodes. " Thanks all. I wish it had been biological in origin, but it still is a neat piece of rock. Link to comment Share on other sites More sharing options...
Kane Posted May 23, 2017 Share Posted May 23, 2017 Thanks for keeping us updated, but sorry it wasn't a fossil It is still a very interesting piece. Maybe the next find will be a fossil. ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
abyssunder Posted May 23, 2017 Share Posted May 23, 2017 I also thank you for the update that might confirm my hypothesis. Liesegang rings " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
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