Dear an expert or a specialist of a dinosaur,
I wonder what this is. Please give me detail explanation about it.
I guess that this will be an egg of a dinosaur.
Is it true or not?
Here are enclosing five jpg-files.
flesung from Seoul Korea.
Dear UK Fossil Guy,
Thank you very much for posting your opinion about my question.
Recently I received an e-mail from a curator of "the Central Museum of Natural History" in New York. He said that my oval-shape big stone is a sedimentary concretion in his email.
May I have a question of that? What is meant by "Concretion"?
I'd like to appreciate your help.
Concretions are formed in sedimantary rock where suspended minerals precipitate around an object, these minerals accumulate causing the concretions that we can find now. They are commonly mistaken for fossilised eggs because of their spherical shape
here are some useful links to give you a bit more information on how concretions form
Thank you very much for posting your quick answer about my question.
I'd like to express my thanks to your guide on http://www.prib.org/ed/concretions.htm
It helped me understand the difference between a fossil of an egg and a concretion.
But I guess that my oval-shape big stone may not be a concretion, because it was discovered on the red-fine mud or soil of my cow-stable(pen) farm. Korean farmers are very diligent in rasiing vegetables and other grains around their houses. they didn't recognize why the queer stone like oval shape is located or not.
I think that someone who lived in the Old-Stone Age or New-Stone Age might have brought the strange stone his house from the basin of the small stream or river. Around the cow-pen I can't find any stone except for red-fine soil. Anyway I am thankful to you for your interest again. Bye.
Dear Flesung - I recognize these photographs and have written a letter to you regarding their identification.
I suppose the letter has not reached you yet? I agree with aisling and Fossil Guy, from the photographs, I do not believe these to be dinosaur egges, rather they are concretions which have undergone what we cann 'onion weathering'. (http://www.tads.co.uk/files/test/page_20.htm )
I have sent you some information about concretions and hope this is helpful to you.
All the best,
Thank you very much for posting your answer about my question.
Your answer and recommending site helped me understand "concretions".
I'd like to trust your opinion, for you are serving at the museum as a curator.
May I have another question about my oval-shape big stone?
If it was made of concretion of stone, doesn't it have any value as educational or archeological material?
One of curators who are serving in the American Museum of Natural History in New York suggested to me that it is good for me to take the stone to the Hospital for taking X-Ray.
Please gave me a piece of good advice.
I'd like to express my thanks to you for helping me again.
flesung from Seoul Korea
You are welcome, glad to have been helpful. To answer your second question, in my opinion, just about everything has an educational value, in this case, it shows us the effects of 'onion rock weathering'. As a geologist/palaeontologist, I find all aspects of natural history interesting.
I do not think your specimen is suitable for X-Ray scanning.
I hope this is helpful to you,
Dear Fiona, thank you very much for posting your kind explanation. Is it Okay if I ask a question of you? Really I'd like to see the photos of an egg of a dinosaur. Please guide me the site or any other good materials. I hope that you will be happy and healthy. Bye.
Insung from Seoul Korea