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Showing results for tags 'chert'.
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From the album: Rhynie Chert
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Retusotriletes spore with vascular tissue? below
Pleuromya posted a gallery image in Member Collections
From the album: Rhynie Chert
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Glomites rhyniensis (symbiotic fungus) hyphae in Aglaophyton major
Pleuromya posted a gallery image in Member Collections
From the album: Rhynie Chert
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From the album: Rhynie Chert
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Glomites rhyniensis hyphae in Aglaophyton major cortex
Pleuromya posted a gallery image in Member Collections
From the album: Rhynie Chert
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Palaeomyces gordoni cyst within Aglaophyton major
Pleuromya posted a gallery image in Member Collections
From the album: Rhynie Chert
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Glomites rhyniensis hyphae in the cortex of Aglaophyton major
Pleuromya posted a gallery image in Member Collections
From the album: Rhynie Chert
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From the album: Rhynie Chert
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From the album: Rhynie Chert
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From the album: Rhynie Chert
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From the album: Rhynie Chert
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From the album: Rhynie Chert
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From the album: Rhynie Chert
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Arthropod coprolite containing spores and Rhynia gwynne-vaughanii
Pleuromya posted a gallery image in Member Collections
From the album: Rhynie Chert
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From the album: Rhynie Chert
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From the album: Rhynie Chert
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I had polished a number of these fossil bearing cherts. The were studied in a paper Paleozoic fossils of the Jersey Atlantic plain, by authors William and Ardis Kuehne. It was determined that these cherts were brought by rivers erroding fossiliferous limestones in the new jersey and new york ridge valley areas and ended up here on this beach with the famous Cape May diamonds (clear quartz) I had these tumble polished by my friend Leo Thomas. I am posting some finds. If any one has more detailed experience with identifying bryzoans and other things from the Ordovician to devonian period please help me out. The last two picture show an odd black piece of what?? Thanks Fred Flinstone.
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Found near the Whetstone Mountains, near Tucson, Arizona. I am very curious about the long, orange tube structures I found. Some folks told me they are just chert nodules. Others seem to think could be fossils. So, I took more photos to see if I can get more information on them. They were found right near some other fossils--fenestellid bryozoans, rhynchonellid brachiopods, gastropods. The area is littered with fossils. Several of these structures reveal a tube structure, which I think would be unusual in geology. A lot of these structures have a very similar shape. Many of the tube walls seem to have a similar and uniform thickness. Most are about as thick as a finger or thumb and range from 4 to 18 inches long. They could be much longer but there's no way to tell as they are broken at the ends. There are dozens of them in the area. I really have no expertise and I sure don’t mind anyone telling me I’m wrong. But I wanted to give you an idea of my thinking. Please let me know what you think--thanks. #1 shows a typical one #2,3,4 show the far ends of #1 #5 shows another one with a hollow tube structure #6 and 7 show two other structures # 8 shows a far end of #1 #9 shows another structure end #10 shows two that seem to be crossing each other
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Stumbled upon interesting "imprints" and "casts" in one of our backyard landscaping rocks (Houston). The landscapers call it "Bull Rock"... I think it is actually "chert". Looks to be marine invertebrate fossils? Would that be common or rare in this type of rock? Wondering if it is worth searching more in the back yard?
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Very large & irregular flint nodule, sea sponge or burrow system?
Thames Adventurer posted a topic in Fossil ID
Hi! I found this very large and irregularly shaped flint nodule on the Thames foreshore, London. To me, it kind of looks like the branching arms of a sea sponge, but I have heard that flint nodules also sometimes filled the shape of animal burrows and other things. It has a number of holes/handles in it. What do you think it is?
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Hi! I found this strange piece of flint on the Thames foreshore. Is this a fossil sea sponge? Thank you
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Hi! I found these unusual looking pieces of flint on the Thames foreshore. Is this pitted flint (and is this the right term for it)? I have read online that pitted flint was formed during the last Ice Age, but does flint require permafrost conditions to experience pitting like this or can it form under normal Winter frost conditions (I live in London, England BTW)? Thank you for your time & any help is appreciated!
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I need some help determining time frames of different layers of rock & clay.
JSERTL posted a topic in Rocks & Minerals
I apologize if some of my tags are wrong. I didn't know what to put so I used what I found on the GeoStrat website using their interactive map for my location. Let me first start with the pictures. What you see is my property in Iron County, Missouri. Thats the ditch by my driveway that got cut out by the lake that's 100ft away. I call it our Little Grand Canyon, It's just an overflow from the lake next to our property. When the Lakes up it flows pretty good as you can tell. The bottom of the ditch is like super hardened clay almost like concrete with A Lot of beautiful nodules. So what I'm trying to find out is how far back in Time (years, decades,etc.) am I starting to see given the depth of the Lil Grand Canyon. I was joking around with my sister the other day & I told her that what we're seeing in the bottom of that ditch probably hasn't seen the Sun in thousands of years probably & who knows what we might discover as more & more gets eroded away. There is one spot in the very centere & you can tell from the pictures that its a lot softer than the rest. It's either going to be a sinkhole/cavity or maybe(fingers crossed) a small Cave opening. I have to wait for the lake to go down(couple days maybe) so I can get down there & investigate. People have offered to fill it in over the years but we like it too much. When it's full of water & its rushing down the little Grand Canyon it's Crystal Clear Water & then there's just the peaceful sound of it flowing so yeah we're keeping it. So I'm sure in order for anybody to give me any kind of guesstimate as to how far back in Time we might be looking (if its even possible for you to give an approximate answer) im sure you need to know some things about my location. That's why I picked those specific tags, they are the keywords that I got off the GeoStrat website. Well if anybody can help me with it this I would greatly appreciate it and I understand if nobody wants to mess with it also. If more information is needed just let me know I'll do whatever I can to gather it for you thank you again. It's all stemming from a question me & my sister had as to how long has it been since these rocks have seen sunlight/how far back in time are we looking? Either way thanks in advance everybody - the picture with the green light is just my green laser I was just trying to illuminate the cavity
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Found this in the ‘Golden Gravel’ in our garden. Source unknown as it was here when we moved in and rock ID’d (using an app) as Yellow Jasper. The closest thing I’ve been able to find for the fossil is Hamulina or Toxoceras (last image), but not been able to find any mention of this being found in Jasper. Any ideas?
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Hi! Is this a stromatolite? I picked up this rock on the premises of the Teleajen oil refinery in Prahova county, Romania. I have seen a chert wedge in a limestone boulder once upon a time, but this stone is different. It has layers of chert and carbonate, right? I grinded and polished the stone. Here is a close-up from the carbonatic area (fizzles with acid): Any idea how old are these rocks when found in S-E Europe? Thanks!
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