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Showing results for tags 'limestone'.
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Hello, I almost die, when I was extracting this ammonite from wall of abandoned limestone quarry. So, that's my very first stone preparation, of 200 mm (7,8") ammonite (Perisphinctes), which I found near my hometown - Kraków, Poland. OK, I know, it's not so big, but the largest I have ever found. As You can see I got carried away, so it's half natural specimen, and half carving. Preparation I done with Dremel Engraver and some chisels I made from old files. I enjoyed it well
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One of my first exciting finds was a piece that looked like a tooth back in March. Turned out to likely be just a cool shaped rock. Fast forward 3 months and I finally found this today, which I believe is an actual tooth. But I'm no expert, is my identification correct?
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I found this piece of limestone that seems to be too much of a coincidence for it to fit in my hand just right. It almost reminds me of the manubrium of the sternum but then I thought it could maybe be an ancient carved tool. It could also be just a rock :-). Any help would be appreciated.
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Hello everyone, I'm New to the fossil forum. I'm from Minnesota and I've got some nice sized Ordovician fossil from the Platteville formation in Rochester, Minnesota. They're in Limestone sediment. One is a slab that is a filled on both side with crinoid stems (hoping for other rarer parts under the sediment on this slab). The other two are large section on cephalopods. I'm looking for some advice/tips on how I should go about prepping them. Like what kind of tools should I be using and if I should use any chemicals. Any advice/tips would be appreciated. Still fairly new to fossil preparation. Also if better pics are needed I can get them Thank you
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Found this piece in the same piece of limestone that my last questionable piece was in. It's a Gastropod for sure. It was split within two separate planes of rock. There wasn't any detail within the split, so I just glued the two pieces back together. I've found lots of gastropods in limestone, but they are usually really tiny. This one was a full size for once. Glued back together using Paraloid B-72. As close as I can say, this limestone is approximately 305 million years old. I've considered both Donaldina and Meekospira. Last Questionable Piece:
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I am nearly sure the top piece is Metacoceras. The middle is a clam, but what species? Perhaps Astartella concentrica? The bottom, what is that thing? 6477/6478 show it in detail. I find these a lot. Are they brachiopods? Not shown, but there is a horn coral on the back of the piece in a cross section.
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Not my best photos, but a quick dimensional Wilkingia that I found over the weekend. Identification is likely but not solid.
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Pseudorthoceras is a bit of a mystery locally for me still. They are probably the most common straight shelled cephalopod I find. I also found at least one Mooreoceras. From what I understand, Mooreoceras and Pseudorthoceras are both classified under the Pseudorthoceratidae Family
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I found this today while walking the shoreline of the, St Croix River in Stillwater, MN. Is this anything?
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G'day everyone! I have become increasingly interested in finding conodont fossils and have found a locality near where I live that is rich in paleozoic vertebrate micro fossils, including conodont teeth. The locality is apart of the Coopers Creek Limestone formation, early Devonian in age and rich in carbonate. I have checked out this locality before and the rock is very, very hard (It has no layering and takes a few hard hits from a hammer to smash the rocks open). My question is what is the best way to dissolve these rocks and once dissolved what should I do next to find the micro fossils? I have read some where that hard rocks are soaked in kerosene for 24 hours to break them down but I don't really think it would be safe to use kerosoene and also expensive to buy enough kerosene to soak the rocks. Here is a link to a paper on the site: http://paleoitalia.org/media/u/archives/28___Basden_1999_BSPI_37_527-541.pdf Thanks, Dan
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This one showed up after a rock split. The steinkern was really shiny and smooth. Usually the shell is hard to save, but I was able to when air chiseling away at this one. There are noticeable grooves on one side.
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Former Floridian trying to restart the hobby in the PNW
winnph posted a topic in General Fossil Discussion
Hi everyone, Once upon a time, I was a young college student at UF whose favorite hobby was spending hours trudging through swamps and up and down creekbeds in search of gravel beds and limestone banks. There were no other types of stone worth noting, so every stone was either limestone or imported. Fossils might not always have been easy to find, but when you did find them they generally were sturdy things that were practically falling out soft limestone or clay. My tools were a hand spade and a homemade screen in a wooden frame, that's it. Fast forward a decade (or two...) and I'm trying to get my kids into the hunt from our new home in the Pacific NW. But things are so different here. The rocks are all strong! So many of the fossils seem so relatively weak! I heard about the Lincoln Creek concretions and that sounded like fun until I saw what you guys go through to prepare those things ... I'd need a whole new workshop just dedicated to that! As I read about all these fossil-bearing formations in the Cascades and Olympic peninsula, most of them sound similar in terms of the difficulty and gear required. So... I'm probably going to take the older kid at least to collect concretions in the next few weeks, but we'll have no plans for what comes next. Actually, I'm pretty sure it will end up with him smashing them "carefully" (with proper eye and dust protection, of course). -
Found these around Saline River in Kansas. Black with striations and crystals. Found in or near limestone.
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My dad actually found this a few years ago in our driveway and thought I'd know what it was so he brought it to me. Pretty sure our limestone gravel came from an Indiana quarry. Haven't really been able to figure out what it is. Some of the grooving looks like it could be a clam but the things that kinda resemble teeth are throwing me off a bit. Anyone think they could help me out?
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I collected with @ rwise in the Goodland Limestone, Lower Cretaceous of Cooke County Texas today. I found this semi-circular fossil that may be a burrow. Looking closer at the large end there was a dotted line, lower left. Closer... Closer... Closer... That's a mm scale and this is the best my camera will do close-in... Any ideas?
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Not a fossil (although in some contexts, a pseudofossil), but I cut and hand-polished a piece of oolitic limestone this evening. These are nice, big, ooids (pisoids in this case), and one can easily see the layering. I thought some might like to see the results (scale in mm).
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Unknown fossil. Found just below a tidal deposit and above a deep water lime deposit. In this layer there are a lot of good sized amonites, and a smattering of pelecypods and scallops and oysters and protocardia and urchins that become much more common just up the rock sequence. Just a bit deeper are fairly common trace fossils of burrowing shells.
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Anyone have any insight to whether this may be a fossilized claw of some sort or just a peculiar shaped piece of limestone. I found this in central Texas outside of Bandera. Thanks in advance for any help.
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Bill introduced to create new fossil park in Illinois
deutscheben posted a topic in General Fossil Discussion
Last fall the state of Illinois purchased over 2,600 acres near the town of Oglesby from Lone Star Industries, including former quarries, with the goal of making it into state park land. It is near the site of the popular Starved Rock and Matthiessen State Parks, and the state said it would take a few years to assess and prepare the site before it would be open to the public. http://www.newstrib.com/free/matthiessen-and-starved-rock-just-got-a-lot-bigger-video/article_203e37f8-d89a-11e8-9a7e-e72ef52ec0d6.html The quarry exposes the highly fossiliferous LaSalle Limestone, as well as a black shale that produces fossils too, so a number of scientists and fossil enthusiasts proposed that a portion of the new protected land should be made into a public fossil park- here is their proposal: https://www.esconi.org/files/proposal-for-a-fossil-park-at-the-former-lone-star-quarry-site-final.pdf Now a state legislator representing the area has introduced a bill to do just that- the synopsis reads: "Amends the Department of Natural Resources (Conservation) Law of the Civil Administrative Code of Illinois. Provides that the Department of Natural Resources shall designate a portion of the former Lone Star Quarry site near Oglesby as a fossil park to allow for the collection of fossils. Provides that Department by rule may designate which portion of the land shall constitute the fossil park and any requirements for admittance or permits for entry into the fossil park. Provides that the Department may collaborate with any State university to establish educational opportunities or events at the fossil park." Hopefully this will become a law and this park can join the famous Mazonia-Braidwood as Illinois's second park for fossil collecting. If you are an Illinois resident, please contact your state representative and tell them to sign on as co-sponsor or support this bill!- 8 replies
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I found this fossil a few weeks ago. It was in a creek bed that flows during the wet season but has pools in the dry. I know the creek has sandstone, but it also looks like it has limestone and possibly slate. There is also a lot of rocks containing rust. This fossil appears to be stained with it. I am located in Western Kentucky near Hopkinsville. One side looks like it is ribs. The other side is smooth and one part is unusually round. There are pockets that appear to be filled with sediment that has solidified into rock. I've added pictures from all sides and others with measurements. I will add them as replies since the files are too large. I wish I had more, but this is all I have.
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Need help identifying the following fragment. Took it out of the limestone in the locality Theokafta of the Argolis Peninsula, near the Ancient Theatre of Epidaurus (Greece, eastern Peloponnesus). The limestone contains condensed ammonoid beds of the Hallstatt facies (Triassic: Anisian–Ladinian). Since I've never seen an ammonite with a cigar shaped ending and the belemnite fossils I've see so far are bullet shaped, I would really appreciate your opinion on the matter! The size is 5cm and diameter 1,5 to 2cm.
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Need help identifying the following ammonites. Found these fragments in limestone, in the locality Theokafta of the Argolis Peninsula, near the Ancient Theatre of Epidaurus (Greece, eastern Peloponnesus). The limestone contains condensed ammonoid beds of the Hallstatt facies (Triassic: Anisian–Ladinian). The size of A is about 8 cm and B is about 6cm (which woyld probably make it about 10-12cm if complete). Any suggestions would be much appreciated!
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I know that eye protection, padded gloves for hammering to reduce harmful vibrations, and many other safety measures have been oft repeated on this forum to guard against injury, but I haven't seen much about ear protection specifically in regards to fossil hunting. First, an unnecessary backstory: I recently came to the realization that I have tinnitus and, being a bit of a hypochondriac, got myself freaked out over it. But that is, of course, silly since I can remember having tinnitus for years but just not really thinking about it. After calming down and realizing that I have had it for years, that it's very minimal tinnitus, and that it's not as bad as cancer, I have been considering ways that I can avoid making it any worse. Along with wearing earmuffs while vacuuming, I have begun to look for other strategies to avoid hearing damage. Now, some of these may be stupid questions (don't let anyone tell you, "there is no such thing as a stupid question."), but here it goes. The formation in which I hunt the most is the limestone/chalk Atco formation. One of my main means of finding fossils is just whacking on chunks of chalk, hoping to luck into some ammonites, echinoids, fish, or a perfectly articulated pterosaur clasping a new species of cretaceous mammal in its talons, and I have had much success (maybe not the last part). I mostly use an Estwing 4lb sledge and Stanely chisels with hand guards to do the job, but sometimes also use a 10 pound sledge for the harder and larger chunks. This works fine, but because I am dealing with relatively hard matrix the pinging of the sledge against the chisels can get annoying, but could it over time also cause tinnitus and hearing damage? Since I have gotten ear protection aware I have begun wearing EP3 Sonic Defenders when fossil hunting which have the great feature of allowing sounds like normal conversation and ambient noise in while reducing any noises above 85dB when the caps are off and greatly reducing all noise when the caps are in. Some of their other plugs like the EP4 and EP7 do the same thing and have more protection with the caps in, so I might get one of those too. So, my questions are: 1-When is it appropriate to wear ear protection while fossil hunting? 2-Could the pinging of my hammer against the chisel and/or chalk chunks cause hearing damage and thus tinnitus over time? 3-What kind of hearing protection do you recommend? Is what I am using ok? BONUS QUESTION-Any recommendations for padded gloves to get?
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I found a fossil that looks like no other in my collection. Any help to what it would be is much appreciated. Found in a creek rock deposit in Cincinnati area. Here are several angles and lighting.
