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Hi, can anyone I'd this for me?


Potato

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Hi, I am new to fossil hunting. I found this today on uk beach where the rocks are from the triassic/jurassic period. It is quite large and is corrugated, similar to corrugated iorn. does any body know what it is? Many thanks 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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3 hours ago, Potato said:

does any body know what it is? Many thanks 

I'm curious about the texture. It doesn't really scream porcelain when looking at the break/thickness/overall texture and surface deformities. I think it is essentially a trace of ancient ripples/ripple marks in sandstone. Not uncommon here in Colorado on the edges of the interior seaway. The rock does have the look of a nice sandstone. 
2023-05-26_17-11-08.thumb.jpg.c83945c7de52a52f50c0d8ef6ad4f712.jpg

 

For reference. Image Credit: Geology Page

Ripple-Marks-GeologyPage.jpg.5db2f70d996107c8c9c67e5c66de6315.jpg

 

Morrison Formation

Image Credit: AGU 

https://blogs.agu.org/mountainbeltway/2011/10/01/ripple-marks-and-cross-beds-in-the-morrison-formation/

morrison04.jpg.aab12de55b2611fb0ef23bb175a3e660.jpg

 

One closer to home: White Strand (near Killard, county Clare, Ireland)

67191099_2546793295373140_7506066510721318912_n-e1570366763908-700x400.jpg.f5cc5339ebc9ecf22bfe4fb16faabf29.jpg

 


Cheers,
Brett 

Edited by Brett Breakin' Rocks
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2 minutes ago, Brett Breakin' Rocks said:

I think is what is essentially a trace of ancient ripples/ripple marks in sandstone. Not uncommon here in Colorado on the edges of the interior seway. The rock does have the look of a nice sandstone

Zooming in on the broken edge i have to agree. Not porcelain. I think @Brett Breakin' Rocks hit the nail on the head…

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THX, Brett and Tarq, for informed opinion.

Brett: great documentation.

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Not porcelain, not ripple marks, I think it is stoneware with a slip glaze that is wearing on the high points.  But, check for a curve to the pieces (slight in these small chunks).  Stoneware may have a curve, ripple marks shouldn't have a curve.

  It seems to me that, if it were ripple marks, there would be many pieces in the area.  These few small pieces suggest that is was a stoneware item.

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http://pristis.wix.com/the-demijohn-page

 

What seest thou else

In the dark backward and abysm of time?

---Shakespeare, The Tempest

 

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When I wrote "porcelain", I actually wanted to mention some kind of ceramic. I'm not up to date on the different species, so I'll go along with Harry's stoneware assessment, now that I've learned a bit more.

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Greetings from the Lake of Constance. Roger

http://www.steinkern.de/

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It wood be good to see the other side of it.

Edited by Bobby Rico
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1517332269_PotatoJuly.JPG.d595e5c4b1a222d3b96a1eda87cc2da2.JPG

I have a picture of you on my wall, Mr. Potato.

Can you give us a more precise location of the find, please? 

I have seen a lot of the ripple marks in South Wales and the Somerset coast and this doesn't resemble what I know, but there are a lot of man-made objects on these beaches as well. 

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Life's Good!

Tortoise Friend.

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Hello everybody and thank you for taking intrest in this. I found it near Cardiff laying on top on top of the stones, it was pretty big in that is was approximately 40x40cm (15"x15"). I did not take it home. To me, it appeared to be made of rock, similar in texture to the surrounding cliffs and scree. It was quite brittle also, maybe if it was stoneware it would have been stronger and broken into sharper fragments?  Unfortunately, this is the only photo I have of it. The back of it was flat, but still irregular, similar to the surrounding rocks. the back was more uniform in colour. Personally I don't think that this was manmade, but I am new to fossils so I cant be totally sure.

Many thanks 

Edited by Potato
typo
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Cardiff, or Caerdydd,  the capital of Wales is the most populous place in the country, not particularly known for its fossils, but certainly for man-made objects for millenia. 

Cymru am byth! 

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Life's Good!

Tortoise Friend.

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Sigh.

I do wish people would give at least a rough location.382373209_Pullinghairout.gif.a929aa2611958cb29840babd566d9c87.gif

Lavernock does have ripple marks in the rocks. 

 

Life's Good!

Tortoise Friend.

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When i blow up the picture the side of it exactly matches the stone its laying on. They don’t match any stoneware, ceramic or porcelain I’m familiar with and I ran a ceramics business for a few years when i was younger. I’m still going with ripple marks….

especially at 40 cm by 40cm

IMG_4181.jpeg

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The cross section shows markings consistent with cross-bedding, which boosts the ripple interpretation.

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3 hours ago, Tidgy's Dad said:

Lavernock does have ripple marks in the rocks. 

Indeed, there is a paper mentioning the different ways these ripple marks present themselves in the formation at Lavernock Point specifically. 

 

2023-05-27_21-26-27.jpg.f856018baf26de118cc3537a303df244.jpg

https://data.jncc.gov.uk/data/64d9db3f-284d-4a36-b67d-b91899fbb82c/gcr-v24-permian-triassic-red-beds-c4.pdf

 

Juuust in case there was any lingering questions.... I also found a visual of the noted formation and the way the ripples are presented. You can see the mineral veins running through both specimens. 

2023-05-27_21-32-29.jpg.4fe394522c99f63e3e348dc8c00fb492.jpg

 

https://ougs.org/files/ssi/news/Sab_Times_December_2012.pdf

 

Cheers,
Brett

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