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Showing results for tags 'lorraine group'.
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From the album: Fossil Art
© Denis Arcand
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From the album: Fossil Art
© Denis Arcand
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From the album: Fossil Art
© Denis Arcand
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From the album: Fossil Art
© Denis Arcand
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Hundred workers, most of whom were Irish, began excavating the Chambly canal basin using picks and shovels, working 12 hours a day. Despite the cholera epidemic that broke out in 1832, some 600 workers managed to dig two thirds of the canal’s 19.31 kilometers. Now, enough about history, let talk about fossil, the Chambly canal was dig in the Lorraine Group part of the Nicolet River Formation. To the pleasure of the fossil hunter, the canal is empty dry for the winter season, making the bottom of the canal available for inspection. https://www.pc.gc.ca/en/lhn-nhs/qc/chambly/culture/histoire/construction This is where I found this bizaroid “fossil”, in quote because I don’t really know what it is. It looks like petrified wood for me. But, if I'm not mistaking, hard wood was nonexistent during the Ordovician period, so this is rising some interrogation about its origin, maybe it was brought over from the query and not the bedrock where it was found, rock and bolder were bring over to make the side of the canal. I want to know if it's a fossil or something else, can a courageous voluntary risk an identification? note that the "fossil" is hard as a rock , not soft at all.
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From the album: Fossils of the Upper Ordovician Lorraine Group in New York
Cryptolithus lorrainensis Upper Ordovician Lorraine Group Whetstone Gulf Formation Jefferson County, New York Collected 11/11/19 -
Hey folks, I’m going to keep it short and sweet. I turned 31 yesterday (May 26th) so I had the day off from work. Still feeling inspired by my Lorraine group adventures I went out exploring again. I did lots of hiking...turns out so much so that I hiked out of the Whetstone Formation and into the Pulaski Shales. The Pulaski formation is just shales and sandstones (50/50 split pretty much) alternating....the upper whetstone grades into the Pulaski conformably so there isn’t an abrupt change. It just starts to have many more sandstone beds inter layered. So basically I thought I was in the upper whetstone and stumbled on a complete Flexicalymene granulosa just sitting in the stream already split open. I decided to stay close by and split a few pieces of shale and found 2 more!!! What!?! I thought I was in the Whetstone Formation and didn’t realize I was probably in the Pulaski shales till I got home. I had no clue the flexis could be found like that....or at all! Seems like if you find the right shales your gonna find one. I didn’t look through much shale at all so they seemed “somewhat” common. the Lorraine group gets weirder and weirder I tell you!! here are a couple photos This was the first one I found just sitting open already split. A nice prep would fix this guy up. The counterpart has the rest of the trilobite. This is the last one I found. Looks to be all there just mostly covered in shale. Saving best for last lol. Check this little guy out! This was the best Flexi. Scale in cm. It should come out great with a little air abrasion. Very lucky find for sure. Now I’m thinking I need to go back to the pulaski shale location I found last year! A happy accident (Hiked too far) on my birthday turned into a rare find! I have middle Ordovician calymenids now I have a late Ordovician example There is a Flexicalymene granulosa for sale on a well known fossil website that is labeled from the Pulaski shale so I made the connection there. If you google Flexicalymene granulosa it’s easy to find the listing. Flexicalymene granulosa isn’t even in the trilobites of New York book. To me that makes this find that much more special....totally under the radar and a total surprise to me. Thanks for reading Al
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Rediscovering New York: Lorraine group, Whetstone Gulf Formation adventures
Al Tahan posted a topic in Fossil Hunting Trips
Hey everyone, Just an update on my recent adventures exploring the Whetstone gulf formation. My last post I went to 2 gorges in the Tug Hill Plateau area known to expose the formation. I didn’t find any significant fossils but it was a good learning experience. On one of my recent weekend adventures I spent all of a Saturday and Sunday hiking another gorge that exposes the Whetstone. I won’t always be posting exact locations in these posts. Sometimes discretion is needed so I’m not blasting localities on this particular one. It happened to be the cold and rainy weekend in the northeast US so they were very cold and wet hikes. It seems the “upper whetstone”......a rather loose term......is more productive as far as frequency of faunal zones from what I’ve read and have been told by reputable sources. This means....you need to get to the upper parts of the formation. These massive gulfs/gorges don’t offer really any access so if you want to get inside the gorges you need to start downstream and hike DEEEEEEEP into the gorges working upstream to get to bedrock that “might” have something. The whetstone gulf formation is dominated by shales with thin sandstone beds inter layered in different concentrations. The upper whetstone has the sandstone layers in more abundance and it is reflected by the debris in the streams. The shale however doesn’t last long....at all! Based on what I saw these 2 field days......the really “good” fossiliferous stuff is in the softer dark grey shales. The sandstones do have nice fossils but extraction is nearly impossible. The fossils in the shales never make it downstream into easily accessible hiking areas either. It’s part of why I think the Whetstone generally isn’t sought out. Just doesn’t seem to attract much attention. On my first hike on Saturday (May 9th 2020) I was determined to hike as far into the undisclosed gorge as possible. I just wanted to see if I could find any sign of these hot zones with fossils. I hiked VERY FAR up into the gorge. No real trails and I had to get a little creative to keep my feet dry and still push upstream. It was Really cold so I tried to stay dry at all costs. I was super far into the wilderness, deep into a massive gorge, and super alone....weird feeling venturing so deep into a gorge and you are sure nobody’s been there for a long time. A few shots of the field terrain. It was cold but sunny during parts of the day...and snow/rained to get me nice and wet. It wasn’t until I got very far and very deep into the gorge that I saw the first sign of a fossil. I didn’t look hard for fossils as much early on cause all the pieces of shale downstream were barren and I didn’t even see shale fragments with fossils so I took that as my queue to keep walking. First sign of a trilobite I’ve found in the Whetstone!! I took this picture cause I was positive it wasn’t going to stay together I grabbed it and it began to disintegrate as expected but...... I found this in the process. A cryptolithis bellus cephalon!!! So cool. I felt like I was seeing a ghost. After all that reading, planning, and walking.....and walking lol.....I finally found evidence of the iconic Cryptolithis trilobite!! I’ve only ever see photos so it was very rewarding getting up close to the real thing. Turns out this is one of my best specimens so far. I found a few other fragments in the same small piece of shale. The articulated crinoid columns are a common feature in the fossiliferous shale. Not sure if the calyx’s show up I didn’t see anything in the literature but who knows. This tiny slab has 3 Triarthrus cephalons too. Continued.....
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Hey everyone, Haven’t posted much about my recent activities so this is a summary of a few things I’ve been up to the past month or so. I had a lot of goals in 2020 with regards to exploring more of the Ordovician rocks in New York. I am very interested in the Ordovician due to the formations and groups represented. The Trenton group, Lorraine group (has whetstone gulf fm and Pulaski fm) have been of great interest to me because I live in Central New York and these rocks are actually very close to me. Last year I did some exploring and it worked out pretty well. I found a great fishing stream with the Pulaski and whetstone exposed. I also found some exposures of Utica shale that I know are promising. I was also able to get permission from a land owner In November to visit a location with the Trenton exposed but I wasn’t able to actually go there till this year. I am going to share my experience with 2 different rock groups I visited recently on several different field days in April and May. The Trenton group and the Lorraine group. Lorraine group, Whetstone gulf exposures northwestern New York Beechers beds. Lorraine group, Frankfort shale Trenton group exposure. Recent permission. The Whetstone gulf formation is probably familiar to many people who are obsessed with New York trilobites, especially the pyritized trilobites. Other than pyritized Triarthrus some may not know about the other fauna found in the Whetstone. Also...nobody is really looking either. Reasons being difficulties getting to the exposures, proximity to state parks and state forests, nobody lives near there so travel is required, private property issues, and LOTS of walking is required. North of Rome, New York around the northern and eastern edges of the tug hill plateau are several enormous gorges with breathtaking exposures. Depending on how ambitious you want to be there seems to be plenty of exposure to see. The whetstone has been regarded as an impossibility complex system with 100s, even 1000s of faunal zones (perhaps a hyperbole or the musings of a frustrated paleontologist!). The fossils that have been found in the whetstone aren’t Fully documented and more work is needed. There are Eurypterids (parts only, super rare) and rare trilobites that have been recorded to be found that are not easy to find information about today. It’s like chasing a ghost trying to even find photos of these fossils. Rudolf Ruedemann wrote a magnificent publication on the Utica and Lorraine formations of New York (1925). Since then his work remains, to me, the best source regarding these formations. Here is a few plates from that. Interesting stuff. Some of the names have changed... Last year I found a calymenid pygidium in some Pulaski formation “drift”. I didn’t hike far enough to reach the whetstone that day so “seeing” the whetstone and exploring is a 2020 goal. Some of the possibilities.....I didn’t find these. These are just examples of a few nice arthropods from the Whetstone. A complete Homotelus stegops from the Whetstone gulf formation. I guess these are very rare A legitimate specimen of some Eurypterid body segments. Whetstone material. Exceedingly rare. Continued.....
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An older article, but news to me. For the first time Trilobite eggs have been discovered in situ. http://www.geologypage.com/2017/02/trilobite-eggs-new-york.html
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Flexicalymene Trilobite from LaPrairie, Quebec
Jeffrey P posted a gallery image in Member Collections
From the album: Ordovician
Flexicalymene sp. Upper Ordovician Nicolet River Formation Lorraine Group Hanson Brick Quarry LaPrairie, Quebec -
Ordovician Gastropod (Cyrtolites) from Laprairie, Quebec
Jeffrey P posted a gallery image in Member Collections
From the album: Ordovician
Cyrtolites sp. (gastropod) Upper Ordovician Nicolet River Formation Lorraine Group Hanson Brick Quarry LaPrairie, Quebec -
Ordovician Gastropod (Hormotoma) from Laprairie, Quebec
Jeffrey P posted a gallery image in Member Collections
From the album: Ordovician
Hormotoma gracilis (gastropod) Upper Ordovician Nicolet River Formation Lorraine Group Hanson Brick Quarry LaPrairie, Quebec-
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From the album: Ordovician
Deceptrix sp. (bivalve- open shell) Upper Ordovician Nicolet River Formation Lorraine Group Hanson Brick Quarry La Prairie, Quebec, Canada -
From the album: Ordovician
Nuculites planulatus (bivalves) Upper Ordovician Nicolet River Formation Lorraine Group Hanson Brick Quarry La Prairie, Quebec, Canada -
From the album: Ordovician
Nuculites sp. (bivalve) Upper Ordovician Nicolet River Formation Lorraine Group Hanson Brick Quarry LaPrairie, Quebec, Canada -
From the album: Ordovician
Flexicalymene sp. (Trilobites-full, partial) Upper Ordovician Nicolet River Formation Lorraine Group Hanson Brick Quarry LaPrairie, Quebec, Canada A relatively small collection compared to Fossil Bob's, but not bad for a day. Each are a half inch or less. -
From the album: Ordovician
Brachiopods- Onniella meeki, Leptaena moniquensis, Sowerbyella serica Bivalves- Nuculites sp. Upper Ordovician Nicolet River Formation Lorraine Group Hanson Brick Quarry LaPrairie, Quebec, Canada -
From the album: Ordovician
Rhytimya sp. (bivalve-both valves open) Upper Ordovician Nicolet River Formation Lorraine Group Hanson Brick Quarry LaPrairie, Quebec, Canada -
From the album: Ordovician
Onniella meeki (brachiopods) Upper Ordovician Nicolet River Formation Lorraine Group Hanson Brick Quarry LaPrairie, Quebec, Canada -
From the album: Ordovician
"Lingula" cobourgensis (inarticulate brachiopod) Upper Ordovician Nicolet River Formation Lorraine Group Hanson Brick Quarry LaPrairie, Quebec, Canada -
Another Leptaena (outside of shell) Ordovician brachiopod
Jeffrey P posted a gallery image in Member Collections
From the album: Ordovician
Leptaena moniquensis (brachiopod) Upper Ordovician Nicolet River Formation Lorraine Group Hanson Brick Quarry LaPrairie, Quebec, Canada Not too well preserved, but shows the shape of the shell. -
From the album: Ordovician
Leptaena moniquensis (brachiopod) Upper Ordovician Nicolet River Formation Lorraine Group Hanson Brick quarry LaPrairie, Quebec, Canada Looks very similar to Leptaena rhombonatis which I've found in abundance in the Helderberg Group/Lower Devonian. -
From the album: Ordovician
Cyrtolites sp. (gastropod- one quarter inch) Upper Ordovician Nicolet River Formation Lorraine Group Hanson Brick Quarry LaPrairie, Quebec, Canada -
Tiny Ordovician gastropods (Homotoma and Cyrtolites)
Jeffrey P posted a gallery image in Member Collections
From the album: Ordovician
Hormotoma gracilis (left) Cyrtolites (right) (gastropods- less than a quarter inch each) Upper Ordovician Nicolet River Formation Lorraine Group Hanson Brick Quarry LaPrairie, Quebec, Canada Found last summer on a trip with my daughter to Montreal. Collected with my friend Ray from NYPS and Fossil Bob from the Forum.
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