paleoman1234 Posted June 14, 2018 Share Posted June 14, 2018 Found this in the city of Tbilisi, Georgia. It was discovered while digging a foundation, under 6 feet of ground. I also found a smaller version of the pictured one, only 1/2 this size. That one was found in kobuleti, Georgia. Also found aproximately 6 feet underground. Both have a prolate spheroid shape. Could not find any flat areas on the surface. Size: 14" ×16" Weight: 38.8 pounds. Link to comment Share on other sites More sharing options...
Rockwood Posted June 14, 2018 Share Posted June 14, 2018 Most likely concretion if there was no deposit of mechanically rounded stones for it to be part of. They can get very large. Link to comment Share on other sites More sharing options...
Vieira Posted June 14, 2018 Share Posted June 14, 2018 It looks like a concretion to me. Link to comment Share on other sites More sharing options...
Crazyhen Posted June 14, 2018 Share Posted June 14, 2018 It is a concretion. Link to comment Share on other sites More sharing options...
Mike from North Queensland Posted June 14, 2018 Share Posted June 14, 2018 The external surface looks to be river worn stone due to the cracks and indentations, rather then being a concretion. Mike 1 Link to comment Share on other sites More sharing options...
Rocky Stoner Posted June 14, 2018 Share Posted June 14, 2018 If convenient, I would also seek the opinion of an archaeologist who is familiar with the history of the two areas. Interesting, will follow. Link to comment Share on other sites More sharing options...
paleoman1234 Posted June 14, 2018 Author Share Posted June 14, 2018 My first thought was concretion but since I found an identical one, same shape and material or stone on the west side of the country but half the size of this one. I couldn't rule out that they could have been used in a catapult as a projectile and man made. I will check with a local archaeologist when I visit Georgia this August before I rule this idea out. Both were found while excavating at a depth of about 6 feet. Surface texture is identical on both. Always open for the forum's input. Link to comment Share on other sites More sharing options...
dalmayshun Posted June 14, 2018 Share Posted June 14, 2018 huge ball of mud from a dung beetle...new discovery. LOL Link to comment Share on other sites More sharing options...
Rockwood Posted June 14, 2018 Share Posted June 14, 2018 4 hours ago, paleoman1234 said: I will check with a local archaeologist when I visit Georgia this August before I rule this idea out. If it were to be shaped as a projectile the raw material would likely be found where the topography was right for swift flowing mountain streams. It might pay to keep geology in mind. Link to comment Share on other sites More sharing options...
KimTexan Posted June 14, 2018 Share Posted June 14, 2018 (edited) I’m curious as to what it may be. In Arkansas there are areas where there are perfectly round concretions. Some up to 4 feet in diameter. They are most noted around Prim, AR. This is a geological article about them. http://www.geology.ar.gov/pdf/MP 22 Prim Boulders.pdf Edited June 14, 2018 by KimTexan Sorry it pasted an image of PDF rather than the link Link to comment Share on other sites More sharing options...
JohnJ Posted June 14, 2018 Share Posted June 14, 2018 Based on the surface texture of eroded fractures, I think it is likely some type of natural cryptocrystalline stone nodule (eg. chert, flint, jasper, etc.). Rounded shapes are common in this material. 1 The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
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