Ralenka Posted June 2, 2020 Share Posted June 2, 2020 Found this rock (upstate NY, Tompkins county). Main rock seems to be shale, but what are the black inclusions in it? The rock on the last picture is different. Is that print from an organism, or just a rock structure? Thanks! Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 2, 2020 Share Posted June 2, 2020 Mostly chert nodules in limestone. The last item looks like a rugose coral in cross section. Shale is much less blocky, and has visible bedding planes. Shale: IMAGE SOURCE It looks like your region has more limestone in it. 6 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...
Rockwood Posted June 2, 2020 Share Posted June 2, 2020 16 minutes ago, Fossildude19 said: The last item looks like a rugose coral in cross section. I think that's a sneaky tabulate doing it's rugose impersonation. 5 Link to comment Share on other sites More sharing options...
Ralenka Posted June 2, 2020 Author Share Posted June 2, 2020 Thanks! Feeling like I need a hammer but the rocks are very hard and I am not sure how to approach it without destroying the fossil. Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 3, 2020 Share Posted June 3, 2020 3 hours ago, Ralenka said: Thanks! Feeling like I need a hammer but the rocks are very hard and I am not sure how to approach it without destroying the fossil. Sometimes, it is better to collect by photograph. 2 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...
Ralenka Posted June 4, 2020 Author Share Posted June 4, 2020 On 6/2/2020 at 4:39 PM, Fossildude19 said: Mostly chert nodules in limestone. Are these chert nodules worth exploring? I read that because of their composition they are excellent fossil preservers. Probably the question is when were these rocks formed. Link to comment Share on other sites More sharing options...
Ralenka Posted June 4, 2020 Author Share Posted June 4, 2020 On 6/2/2020 at 4:57 PM, Rockwood said: I think that's a sneaky tabulate doing it's rugose impersonation. I found another similarly looking print near the one above. I almost missed it, but on its side there is these grooves that made me think it might be of organic origin. That one is larger, about 10 cm. Is it also a coral? Thanks! Link to comment Share on other sites More sharing options...
Rockwood Posted June 4, 2020 Share Posted June 4, 2020 42 minutes ago, Ralenka said: Is it also a coral? It's a little hard to see the detail well, but I think it must be. A tabulate colony is my guess. 1 Link to comment Share on other sites More sharing options...
Ralenka Posted June 5, 2020 Author Share Posted June 5, 2020 Thanks Link to comment Share on other sites More sharing options...
Ludwigia Posted June 5, 2020 Share Posted June 5, 2020 16 hours ago, Ralenka said: Are these chert nodules worth exploring? I read that because of their composition they are excellent fossil preservers. Probably the question is when were these rocks formed. As far as I know, there's not very much chance of finding a fossil in chert from these layers. You have a much better chance of that in Cretaceous chert. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ralenka Posted June 5, 2020 Author Share Posted June 5, 2020 8 hours ago, Ludwigia said: As far as I know, there's not very much chance of finding a fossil in chert from these layers. You have a much better chance of that in Cretaceous chert. Ok, got it, thanks! Are chert nodules form before the surrounding layer (limestone in this case)? Link to comment Share on other sites More sharing options...
Ludwigia Posted June 5, 2020 Share Posted June 5, 2020 2 hours ago, Ralenka said: Ok, got it, thanks! Are chert nodules form before the surrounding layer (limestone in this case)? Read this. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ralenka Posted June 6, 2020 Author Share Posted June 6, 2020 Thanks, @Ludwigia Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now