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post #1 of 8 (permalink) Old 01-14-2013, 01:49 PM Thread Starter
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gastroliths

My brother founds these near Gibsonia, PA. A bulldozer was pushing dirt over a hill and he saw them rolling down the hill. Since there is no glacier soils there, smooth/polished round rocks are rare. Some are almost perfectly round.

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post #2 of 8 (permalink) Old 01-15-2013, 11:27 AM
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Re: gastroliths

There's somebody with a bit too much time on their hands. Polish a derned rock to a brilliant patina.

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post #3 of 8 (permalink) Old 01-15-2013, 11:46 AM
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Re: gastroliths


they are pretty cool looking though!

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post #4 of 8 (permalink) Old 01-15-2013, 04:17 PM
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Re: gastroliths

Are they supposed to be gizzard stones from dinosaurs? I had heard that, but was not sure if it was true?

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post #5 of 8 (permalink) Old 01-16-2013, 01:42 AM Thread Starter
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Re: gastroliths

Correct Joe. stomach or gizzard stones from dinosaurs.
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post #6 of 8 (permalink) Old 01-16-2013, 11:21 AM
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Re: gastroliths

Thats pretty cool in my book! If I was your bro I guess I would be looking for the dinosaur bones right there, probably worth alot more than belly rocks, LOL!

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post #7 of 8 (permalink) Old 01-16-2013, 11:52 AM
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Re: gastroliths

Quote:
Correct Joe. stomach or gizzard stones from dinosaurs.
... and here I thought they were rocks "polished" by Indians of some sort. Learn something every day.

But per the images from Wikipedia and a few other sources, none of the ones pictured were round like yours.

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post #8 of 8 (permalink) Old 01-18-2013, 10:49 PM
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Re: gastroliths

Fleroo, I like your research methodology. I would support your theory of non- gastroliths. My guess without seeing them in person would be an artifact associated with an early industrial site of sort. If 222's brother looks at the sites location on an early map of Gibsonia there was probably an old industry located there. Or fill from an early industrial site was dumped at that location. Those same rocks can be found today just outside of Uniontown, PA. on route 51 near Redstone Creek. I have some under my deck that I found when I was young and living in U-town. The site was an old enamel plant that my great grandfather worked at. I have heard that those "rocks" artifacts were used in a grinding, polishing, tumbling type of process. However, I have not researched the industries located at that site in Uniontown. I have also found some near Leesburg Virginia. One way to know for sure would be to take them to a Paleontologist at the Carnegie Museum.

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