Kurvinosaurus Posted June 19, 2022 Share Posted June 19, 2022 Found this in South Dakota with other petrified wood. I’m just wondering if this piece is for sure petrified wood, or just a rock? Thank you! Link to comment Share on other sites More sharing options...
Ludwigia Posted June 19, 2022 Share Posted June 19, 2022 Info on stratigraphy, more precise location and its lithology and circumstances of discovery would certainly help any judgements made here. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
MarcoSr Posted June 19, 2022 Share Posted June 19, 2022 Look at the piece under magnification to see if you see any wood cell structure. If you do, it is petrified wood. If you don't, the piece still could be very poorly preserved petrified wood or even a cast where all the wood is gone, and the cavity created by the wood was infilled by different minerals. Looking at your pictures blown up, I don't see any wood structure. Could you post pictures of a few of the other pieces that you think are petrified wood? Marco Sr. "Any day that you can fossil hunt is a great day." My family fossil website Some Of My Shark, Ray, Fish And Other Micros My Extant Shark Jaw Collection Link to comment Share on other sites More sharing options...
doushantuo Posted June 19, 2022 Share Posted June 19, 2022 (edited) e.g.: The role of ontogeny in wood diversity and evolution Joyce G. Onyenedum, | Marcelo R. Pace slightly more than 8 MB DOI: 10.1002/ajb2.1801 recommended!! edit :pic addedyPace2021.pdf Edited June 19, 2022 by doushantuo 2 Link to comment Share on other sites More sharing options...
Kurvinosaurus Posted June 20, 2022 Author Share Posted June 20, 2022 We found the pieces in badlands formations outside of Badlands National Park. We hiked down into a canyon and the ground was littered with all kinds of rocks and supposed petrified wood that had eroded out of the formations. Here’s more pieces we found. Link to comment Share on other sites More sharing options...
MarcoSr Posted June 20, 2022 Share Posted June 20, 2022 Thank you for posting the additional pictures. Some of the additional pieces just don't look like petrified wood to me. A few could be. Hopefully @ynot Tony can comment on whether these pieces could all be just geologic. Marco Sr. "Any day that you can fossil hunt is a great day." My family fossil website Some Of My Shark, Ray, Fish And Other Micros My Extant Shark Jaw Collection Link to comment Share on other sites More sharing options...
EMP Posted June 21, 2022 Share Posted June 21, 2022 I think these might be metamorphic rocks re-worked into the Cretaceous/Tertiary deposits. The bands of what looks like black biotite and quartz/feldspar point in that direction for me. Link to comment Share on other sites More sharing options...
ynot Posted June 21, 2022 Share Posted June 21, 2022 Sorry to be the bearer of bad news, but I see mica schist and no petrified wood. 1 1 Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
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