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Showing results for tags 'formations'.
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Looking for help identifying formations in central Texas
element_103 posted a topic in Questions & Answers
Hello all, Can anyone recommend a paper, book, or website that can help me learn how to identify the formations in Texas (especially central Texas [i.e., San Antonio northeastward to Georgetown])? I am realizing more and more the utility of formation info for fossil identification as well as the scientific value such information adds to an individual's personal collection. Thank you kindly in advance for your help -
Opalised wood the last one the wood is opalised on the top and inside replaced with agate
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- australia
- cretaceous eras
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A few opalised wood . Opal formation replacement of woods , and opalised wood replaced by Gypsum opalised and petrified wood
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I just had a general discussion about Fossils with ChatGPT, It's a language model created for the purpose of holding a conversation with the end user. A search engine indexes web pages on the Internet to help users find the information they need. I have to say I'm impressed it was able to find species level information as well as specific information on geologic formations in my area. Of course, I don't really know how good the information is. As an example, here is a question I ask and the corresponding answers it returned What is the difference between Rafinesquina alternata, and Rafinesquina crenulata ? Rafinesquina alternata and Rafinesquina crenulata are both species of brachiopods, which are a group of marine invertebrates that have a bivalve-like shell. The two species belong to the genus Rafinesquina and are found in the fossil record of the Ordovician period. The main difference between the two species is in the shape and ornamentation of their shells. Rafinesquina alternata has a sub-triangular shape with a convex ventral valve and a concave dorsal valve. The shell is smooth and has a curved hinge line. Rafinesquina crenulata, on the other hand, has a more circular shape with a convex ventral valve and a concave dorsal valve. The shell is ornamented with crenulations or small, rounded ridges along the margin of the valve. Both species lived in the shallow sea environments of the Ordovician period, and are found in the fossil record in North America and Europe. They are important fossils for biostratigraphy and help in dating of the rocks and understanding the faunal change through the time. It's worth noting that species identification of fossils might be difficult and uncertain, as it is based on morphological characteristics, and not all characteristics are preserved in fossils.
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Question regarding formations in and around San Francisco
LexonTheDragon posted a topic in Questions & Answers
Is Pacifica part of the Purisima Formation or the Merced Formation? If possible, could someone tell me areas around Pacifica that are Purisima, and some that are Merced? sorry if I'm asking a lot, I am just genuinely confused about where each formation is because they are so close to each other. -
San Antonio, Tx Do limestone and/or sediment formations tend to repeat a formation in similar shapes and sizes? The one on the top left appears to be a clay bottle.
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Hi I decided to make a post about my main research project right now on Campanian Tyrannosaurs specifically Daspletosaurus. Today I have found something to tell teeth from the Judith River Formation and Dinosaur Park Formation. This could also do with the Tyrannosaurs prey or locality. I found out that Judith River Formation Tyrannosaur teeth serrations are more circular and more round compared to the same time Dinosaur Park Formation Tyrannosaur teeth serrations. The Dinosaur Park Formation Tyrannosaur teeth serrations are more longer skinner and more chiseled like but not like other Tyrannosaur teeth from other areas like T. rex’s teeth serrations. Certain Tyrannosaurs in different areas and times would/could of had unique serration morphology probably dew to there prey. I did this on multiple teeth from the Judith River Formation and Dinosaur Park Formation to strengthen my hypothesis. Any opinions on this topic would be great. I will post more on my research here on this and other topics on the Tyrannosaur/Daspletosaurus. I have been doing research on this Daspletosaurus from the Dinosaur Park Formation and it’s close relatives because it was the first dinosaur fossil I’ve ever found. I’ve liked fossils and dinosaurs since I was 2 but in 2018 I went to Alberta and found my first dinosaur fossil which was a fossil from the Dinosaur Park Formation Daspletosaurus sp. Thats why I have been researching on this topic. The serrations I found on Dinosaur Park Formation Tyrannosaur teeth. The serrations I found on Judith River Formation Tyrannosaur teeth.
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I use this site https://mrdata.usgs.gov/geology/state/map-us.html#search-results to see what formations my collecting sites are in. But, due to my lack of knowledge (?) it only helps so much. When I click on the map at the collection site location I get this type of data : Record ID Name Comment OHOdl;0 Drakes, Whitewater and Liberty Formations, Undivided Ordovician OHOgm;0 Grant Lake and Fairview Formations, Miamitown Shale, Undivided Ordovician OHOwa;0 Waynesville and Arnheim Formations, Undivided Ordovician I interpret this to mean that all 3 formations are represented at this site. In this case, standing at the site I can visibly discern 2 very different areas, one above the other. But that isn't typically the case. Can anyone give me some guidance or point me in the direction of how to interpret this information? Is there a better place to go to figure out the formations?
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I have a few things I want to know about the fossil formations in general. Are there any formations located underground entirely and are undiscovered? Have we seen more evolved species disposited on top of another less evolved species? Thanks for any help
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Hi everyone, need help with some identification here. The first photos of the brown looking tooth was found in Edisto, while the bone you see was found in Dorchester Creek in Summerville.
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Hi I decided to make this since the new Tyrannosaur from Alberta’s Foremost Formation, Thanatotheristes deerootorum has just been named and described. Enjoy!! Tyrannosaur bearing Formations in Canada: Formations in Alberta but most of the Formations on my list are I Alberta anyway. Horseshoe Canyon Formation 74-68 million years ago, Alberta: Albertosaurus sarcophagus, possibly Daspletosaurus sp. but no compelling evidence so far. Oldman Formation 78.2-77 million years ago, Alberta: Daspletosaurus torosus, Gorgosaurus sp. Foremost Formation 80.5-78.2 million years ago, Alberta: Thanatotheristes deerootorum, possibly Gorgosaurus sp. Milk River Formation 84.5-83.4 million years ago, Alberta: Tyrannosaur. indet could be a species of Thanatotheristes, possibly Gorgosaurus sp. Scollard Formation 68-66 million years ago, Alberta: T. rex, possibly Nanotyrannus Formations in British Columbia: Wapiti Formation 76.8-70 million years ago, Alberta, British Columbia: Unknown Albertosaurinae either Gorgosaurus or Albertosaurus, possibly Daspletosaurus sp. Tumbler Ridge 135-74 million years ago, British Columbia: Tyrannosaur. indet Formations in Saskatchewan and Manitoba: Dinosaur Park Formation 77-75.5 million years ago, Alberta, Saskatchewan: Daspletosaurus sp., Gorgosaurus libratus Frenchmen Formation, 68-66 million years ago, Saskatchewan: T. rex, possibly Nanotyrannus Bearpaw Formation 75-72 million years ago, Alberta, Saskatchewan, Manitoba: Daspletosaurus sp. one specimen from Daspletosaurus sp. that drowned. For now these are all the Tyrannosaurs known from Canada. No Eastern Tyrannosaurs in Canada yet either but maybe someday. I will also update this and add as more information comes available.
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- alberta
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Well, in my research to find a fossiliferous bed near me I have been struggling with the geology, and spending days driving around observing, taking notes and pics. Well, I just found a published paper from one of the original paleontologists. In it, he lists the location of each outcrop, but this leads to more confusion. When I track the T,R,S locations listed, there is nothing there. Every promising site I found while scouting is clearly visible on satellite mapping. When I look up the listed spots, I find NOTHING. It's just plowed farmland. I find zero evidence of buttes, mesas, draws, cuts or anything that could be an exposure of the formation. I've obviously got to do some more "boots on the ground" stuff, but I'm not feeling hopeful for the listed sites. Maybe I'll start by investigating any outcrops closest to the listed locations.
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- formations
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Greetings!!! I'm planning a trip to New Mexico this summer. I would welcome any information besides the basic tourist stuff. I'll be in the northern Farmington area for a week. Can't wait!!! Thanks in advance for any insight. Bruce (WATERLINE)
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This on a high wall on a road cut along side of the end of rt 34 in Hamlin Lincoln CO WV, its about 20 ft above the road about 625ft above see level and about 60ft above the mud river am i correct in assuming that this hole was caused by a torrent of water whipping that boulder around inside there its about the size of a medicine ball. Ive seen these on the bottoms of creeks but never up on hillside like that. What kind of flow would it take to do this as far as feet per second i know theres a formula just cant think of it
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Formation Names: Which do you like the most?
MeargleSchmeargl posted a topic in General Fossil Discussion
As you all are (hopefully) aware at this point, there are countless scores of fossiliferous formations all across the world, each with its own name. What formation's name do you like the most? I'd have to go with my home town Conasauga Formation. It has a really nice ring to it (and of course, there's some home-town bias in there ).- 26 replies
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Hello friends, I am wondering how much "mixing" there would be of the material from neighboring formations as the transition from one to the other occurs at the surface. I suppose the gradient of the formation layers and fractures as well as the slope of the surface would play a large part in producing the "blended" area (if there actually is one). Referencing the pics, For instance, my location is Mahantango indicated by the red arrow. Less than a mile to the west, the grade is fairly steep up through the Marcellus, then about 2 miles to the Oriskany Sandstone which I find quite a bit of in my area. Could the map be off a bit ? Is there typically a "mixed blend" where formations meet at the surface ? Can one approximate the width of these blended zones ... if they do in fact occur ? Just curious, as usual. Thanks for your time.
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Stratigraphy of the Late Cretaceous North America
Troodon posted a topic in General Fossil Discussion
Placement of terrestrial formations in the late cretaceous of North America as been constantly evolving and in October 2016 Denver Fowler a Paleontologist at the Museum of the Rockies published a very extensive paper on the subject and updated most units. This is very important when it comes to understanding dinosaur evolution and aids in describing species. This paper is in the process of going through peer review so is subject to change. Fowler DW. (2016) A new correlation of the Cretaceous formations of the Western Interior of the United States, I: Santonian-Maastrichtian formations and dinosaur biostratigraphy. PeerJ Preprints 4:e2554v1https://doi.org/10.7287/peerj.preprints.2554v1 The paper is pretty technical but all of the data is found in this excel file (supplemental information) which is a massive high-resolution stratigraphic chart for all of the formations from the late cretaceous of North America. It's nice to see it all laid out and a great reference source. https://doi.org/10.7287/peerj.preprints.2554v1/supp-1 To make it easy I've broken the chart apart so you can easily see most important dinosaur formations Texas The biggest change came with our understanding the Aguja and Javelina Formations of Texas part of the Tornillo group. The study indicated that the Aguja Formation deposits are only Campanian in age and that the Javelina Formation does not extend into the end of the Cretaceous. Very important when trying to describe species in those formations. Sellers have been comparing the Aguja to the Judith River in Montana well there is a correlation but its deposits are much younger that JR. Eastern Montana, N. Dakota, S. Dakota and Wyoming What I found interesting is that the Hell Creek is much older in Montana than in the adjacent states. The other interesting observation that can been easily be seen on these charts is that the how short a time frame the deposits of the Hell Creek/Lance formation are compared to the other major dinosaur formations. Central Montana Two Medicine and Judith River Formations are the two key formations in this locality Utah and New Mexico Utah depicted on the left and NM on the right Head North to Canada Alberta and Saskatchewan
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Ok This wall had me looking at it for some time, do you see anything fossil related? location 2km north of amathus ancient city, limassol, island of cyprus and on the opposite hill :
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Anyone know of any area's near Kansas University ??
Twinlukers posted a topic in Fossil Hunting Trips
Hello I'm heading to Kansas for a father son weekend at his campus. (Jayhawks) Lawrence Kansas. i was curious if anyone has any areas of interest for trilobites? I'm doing some research but not much luck so I'm hoping someone here knows if some areas? We are going to hunt lake texoma on our way back and maybe NSR.. But if we can find some areas near 35 on our way back it would be great.. thanks everyone.. -
I found 2 more discoveries today on a couple of odd rocks and have no clue as to what they maybe
