Srabner Posted September 13, 2018 Share Posted September 13, 2018 Hello, Looks like I don't know much, as this should be an easy ID. Thanks Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted September 13, 2018 Share Posted September 13, 2018 Worm burrows. Could be made by other things, but burrows, anyway. Nice piece. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
DPS Ammonite Posted September 13, 2018 Share Posted September 13, 2018 Looks like limestone that is either fallen stalagtites or covered plant material such as needles. Does the rock fizz in acid? Where did you find these? Where they near a limestone cave or a limestone precipitating spring? 1 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
RJB Posted September 13, 2018 Share Posted September 13, 2018 Some good pictures for sure and I can see how you think 'straws'. But what folks here are gunna need is some information like location, formation, age and anything else that is pertinent. but for me,,, these are Strawbolus wormburrowis. Im just kidding of course, but now im wondering when the forum dudes are going to cut me out of the picture? RB Link to comment Share on other sites More sharing options...
Innocentx Posted September 13, 2018 Share Posted September 13, 2018 Could be tufa, an interesting thing to have an example of. 3 "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
Srabner Posted September 13, 2018 Author Share Posted September 13, 2018 Thanks for the replies. I have no information on age, location, or if they were near limestone. I don't have any acid right now. Link to comment Share on other sites More sharing options...
ynot Posted September 13, 2018 Share Posted September 13, 2018 3 minutes ago, Srabner said: I don't have any acid right now. Vinegar is a good acid to use for the fizz test. 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...
Carl Posted September 14, 2018 Share Posted September 14, 2018 I don't think these are worm borrows: too straight and too crowded. It reminds me of travertine covered plant material. These aren't the best photos but they're something to go on: https://www.alamy.com/stock-photo-fossil-plant-remains-in-travertine-rock-93512258.html 3 Link to comment Share on other sites More sharing options...
Rockwood Posted September 14, 2018 Share Posted September 14, 2018 1 hour ago, Carl said: It reminds me of travertine covered plant material. Agreed. That's what this piece from near Hot Springs, SD was identified as. 1 Link to comment Share on other sites More sharing options...
Innocentx Posted September 14, 2018 Share Posted September 14, 2018 Is travertine similar to tufa? "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
DPS Ammonite Posted September 14, 2018 Share Posted September 14, 2018 5 minutes ago, Innocentx said: Is travertine similar to tufa? Travertine is similiar to the limestone variety of tufa. Sometimes tufa refers to a volcanic rock. 1 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
DPS Ammonite Posted September 14, 2018 Share Posted September 14, 2018 @Srabner Besides an acid test, try scratching it with a steel knife blade. If it cannot be scratched, the rock might be silicious which would indicate a hot spring deposit. 1 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Rockwood Posted September 14, 2018 Share Posted September 14, 2018 10 minutes ago, Innocentx said: Is travertine similar to tufa? It almost seems like tufa, by definition, may be more precise in this circumstance. I'm not certain there is an absolute distinction though. Link to comment Share on other sites More sharing options...
DPS Ammonite Posted September 14, 2018 Share Posted September 14, 2018 Tufa and travertine definitions vary and sometimes mean the same thing. See thing really good paper: Capezzuoli, E. et. al. (2014). "Decoding Tufa and Travertine (Freshwater Carbonates) in the Sedimentary Record: The State of the Art" Sedimentology 61, 1-21. 2 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
abyssunder Posted September 14, 2018 Share Posted September 14, 2018 It looks calcareous tufa, to me. Here are similar ones, from an older topic: More details / information can be seen in this topic: 1 " 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...
Srabner Posted September 15, 2018 Author Share Posted September 15, 2018 Hello, I put some vinegar on a small piece, and it quickly turned to loose dirt like particles at bottom of bowl. It is not real hard, and crumbles in the hand easily. It sure looks like calcareous tufa. Thank you. 1 Link to comment Share on other sites More sharing options...
Ludwigia Posted September 15, 2018 Share Posted September 15, 2018 I'll go with tufa on plant material as well. I have similar stuff in my collection and it's all pretty recent. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
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