New Members arielmlee98 Posted September 15 New Members Share Posted September 15 Hi all, I found this rock in Oregon, USA on the beach in Clatsop County. I was struck by the interesting impression in the rock and I wondered if anyone could tell me whether it might be a fossil imprint or just a natural variation of the rock! It looks like some kind of plant to me. Link to comment Share on other sites More sharing options...
Fossildude19 Posted September 15 Share Posted September 15 Welcome to the Forum. I agree, it looks like some sort of plant fossil, but I'm not sure there is enough detail to get a more specific ID. 2 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 IPFOTM -- MAY - 2024 _________________________________________________________________________________ "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 September 15 Share Posted September 15 I disagree. This looks like a mineral inclusion to me. I see no indication of it being a plant fossil. 1 2 Link to comment Share on other sites More sharing options...
Fossildude19 Posted September 15 Share Posted September 15 4 hours ago, Rockwood said: I disagree. This looks like a mineral inclusion to me. I see no indication of it being a plant fossil. I don't think it is an inclusion, per se, ... but it could be mineral staining. I think it does LOOK like a plant fossil. May not be, however. It could be a coincidental looking fracture pattern with mineral staining. 1 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 IPFOTM -- MAY - 2024 _________________________________________________________________________________ "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...
Plantguy Posted September 15 Share Posted September 15 I like it!, but I'm not sure. I want it to be a plant fragment and wish I knew more about the geology of that beach and paleontology of the area/possible other finds. Could very well also be a hackle fracture pattern with an iron/manganese stain... Regards, Chris 1 Link to comment Share on other sites More sharing options...
Rockwood Posted September 15 Share Posted September 15 It's the fact that it shows on two sides and the rusty look surrounding one of them that makes me think this is something in the rock that darkens with weathering. It would also be a form of staining, just internally sourced. 1 Link to comment Share on other sites More sharing options...
New Members arielmlee98 Posted Wednesday at 08:01 PM Author New Members Share Posted Wednesday at 08:01 PM Thank you all for replying! While trying to ID a different inclusion on another rock, I came across “dendrite” rocks. I’m thinking that this might be a manganese dendrite pattern- thoughts? Link to comment Share on other sites More sharing options...
Plantguy Posted Wednesday at 11:10 PM Share Posted Wednesday at 11:10 PM I've seen dendrites in the field and have some hand samples somewhere. What I know about them is that they are very finely defined branch/tree like features. Yours looks much more coarse/wide than what I'm familiar with but it sure does have a general plant like/dendritic broader shape to it. I'll have to go look to see how the base of the dendrites look..... Need one of the geology/mineralogy guys to set us straight on their crystal formation/growth/features! Regards, Chris Link to comment Share on other sites More sharing options...
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