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Everything posted by ltpaulbtv

  1. Concretions usually form early in the burial history of sediment, before the rest of the sediment has hardened into solid rock. Concretions, the most varied-shaped rocks of the sedimentary world, occur when a considerable amount of cementing material collects locally around a nucleus, often organic, such as a leaf, tooth, piece of shell or fossil, dead and/or decade matter - like a crab or fish. Most concretions form around marine invertebrates...but are not limited to marine life. FYI
  2. Here are some concretions that I found at the Sharon Vt site while on a field trip with our Gem and Mineral Club last Saturday. I probably found close to 100 lbs of them but haven't really weighed them. These are not your average concretions because they have some really cool irregular shapes. I believe they are a calcium carbonate type. In the picture I show some that are wet, which are the darker ones, they have a green tint to them. When they dried up they turned grey/green and seemed to have a little sparkle to them. Most of them have some sort of broken piece missing on them. They
  3. Thanks Bill for the article, I've never seen that one before. I haven't been to isle La Motte since I was a kid. I know it's richer there in fossils. What do you think about this specimen. I'm also thinking it might be some sort of sponge as well. Hopefully others will give there opinion. Thanks!
  4. I'm not sure if it takes a polish. When I get a chance I'll try it and post the results.
  5. Yes they are Doc! Microorganisms, especially Cyanobacteria commonly known as blue green alge. From what I read on them, they provide the most ancient records of life on earth. Roughly 3.5 billion years old. When these things lived, earth did not have adequate oxygen to support much life. Earth is only 4.5 billion years old. I'm thinking of taking a slice from it but I don't have a saw with a blade that deep. I really don't want to butcher it. If you're interested, the area that these fossils came from was the south east end of North Hero Island. By Roosevelt highway.
  6. My next trip up I'll take a better look. It's a two hour drive from where I live so I can't go a lot. I'm hoping for at least two more trips this summer. There is a wall about ten feet high that goes quite a distance with many loose stones. Hopefully I'll find some better ones. I'll keep my eyes open for you Doc!
  7. These were found just at the extreme south end of North Hero Island on the East side off the main road.
  8. Here are a few of the pieces that I found. One of the is whole and one has a small opening in it. The larger piece shows the different layers inside. The first pictures on this post show the host rock and the Obloid a long with the piece of host rock that split off. The oboist was in pieces and the rock was split when I found it.
  9. These are pictures of a different rock found nearby. The obloids were so rusted and fragile.
  10. This is what I believe to the hematite obloid. The stone was in two parts. A section of the shale was separated from the main part of the stone. It's the picture with the hole in the thin stone. The obloid was in pieces but was laying around and on top of the stone. As you can see it fits the space and matches. I also found another stone with four of the same, but smaller. I did find some other pieces of hematite obloids in the same area. I'll post them as well.
  11. While searching for fossils on the shores of Lake Champlain and after finding a Stromatolite earlier I found this rock in the same area. I'm really not sure if it is a fossil but after reading about the stromatolite I came across the stromatoporoid. There is lots of shale and limestone deposits nearby. I also found some trillibite fossils in a rock close by. Can anyone let me know what they think! It looks the same on both sides. As always its greatly appreciated!
  12. Back in January I posted a rock that was found on the shore of lake Champlain. It was identified by rock hunter 1620 to be a stromatolite. The post back in January was a friends find. I went back to the area last week and found myself one. The lake level has been high so I decided to look anyways. The beach is mostly shale and is located on what is called the inland sea part of Lake Champlain, in Grand Isle, Vermont. This one was found about 500 ft north from the first one last year wedged between some rocks. It wasn't in plain sight but I knew what I was looking for. In the first
  13. Hi doc: I sure will! I'll let you know if I find any more. I'm hoping to go sometime this winter, but it probably won't be until spring. Unless Mother Nature melts some of this snow. I'll keep in touch one way or another. Take care
  14. Thanks doc! Now that I know what they are I'll be going back when the snow melts to find more. Every year I do a talk to first graders about the stones I have collected. I don't go to much in detail, but they love the stories and the colors of the different specimens I show them. These would be nice to talk about coming from Vermont.
  15. Here are some better quality pictures. Thanks everyone for your posts.
  16. Thanks for all the good information. Yea I was quick withe the shutter on the camera and the light was really not what it should have been. After looking at the pictures and reading about the stromatolites I believe you hit the nail on the head. I did a little searching on geological finds here in Vermont and haven't found any information about the stromatolites. I'll do some more research and see what I can find. I'll get some better pictures and post them to. Thanks!
  17. I definitely think it does justify a small window to see what's inside.
  18. Yes glaciers moved through this area. Lake Champlain is about 168 miles long 12 miles wide and about 400 feet deep. Back in the 1930's. someone actually found the remnants of a fossilized whale some where close to the lake.
  19. In the first picture is a section of this large wall probably 20 foot sq. Notice the circular areas imbedded in the wall. The following pictures are rocks were found near this wall. Some were rusted and some that were not. They did not attract to a magnet. One has a unusual oval shape and was not rusted but looks like a fossil. The last three pictures are the same rock. As you can see from the picture they appear to have fallen from the wall. If you look at my previous post you will notice another specimen looking like a chunk of coral which was found nearby. Lake Champlain has a
  20. This rock was found on the beach in North Hero Vermont at Knights Point. After studying some of the history of lake Champlain and its fossilized coral reef in Ferrisburg Vermont I am wondering if this is a fossilized coral specimen. It is quite heavy. North Hero is about 60 miles north of Ferrisburg. There have been many fossils found in the black shale surrounding the Lake Champlain Islands. Any thoughts, opinions would be appreciated. Thanks
  21. I must say that I was even surprised to find something there! I did see a lot of trailers and dirt not to mention roads that go no where! One of my prized stones that was given to me was this beauty. Any one willing to try and guess what it is? http://i615.photobucket.com/albums/tt238/ltpaulbtv/1FED61F9-77D3-4D51-B4FE-3BC73513CAC1-5256-00000ACC294FFA48.jpg
  22. Thanks everyone! I found the rocks in Pahrump NV which is about a ten minute ride to CA. It's amazing to see a rough rock and turn it into a a beautiful cabochon.
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