hi, any one nows what this is, weighs 1000 lbs

taz11

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Sep 27, 2024
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It's a big freaking rock is what it is, or, as a wag it may be a prehistoric giant clam..
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'jewelerguy' got it.
Calcareous concretions are spherical to oval-shaped calcium carbonate concretions that are flattened parallel to the bedding planes. They can range in size from 3 cm to 8 m in diameter. They most often precipitate around a nucleus of fossilized material including plant matter, shells, or even remains of fish. Often when the concretions erode, they can form odd shapes, sometimes resembling fossils.
Source: https://www.priweb.org/blog-post/concretions
Don in SoCal
 

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