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Showing results for tags 'concrete'.
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Beautiful stone with dendrites & ? and other anomalies in concrete rock
Lone Hunter posted a topic in Fossil ID
The apartments I live in are doing plumbing excavation and this was dug up, couple things caught my eye so drug it home. It's a very pretty variety of rocks to be mixed in cement if that's the case, couple strange things one in first pics, (not the rock) then there is the stone with unusual dendrites I'm assuming, what is the thing they are growing around in center? Whats with all the tubular shapes? Sorry for picture quality my lens getting scuffed up. Except for first three pics all the rest are same stone, I became slightly obsessed with it -
Hi all! I’m hoping to solve a mystery. I find these objects pretty regularly along the San Mateo coast of Northern California. I’m not even sure they’re fossils, but the bluffs above the beach are part of the Purisima Formation with plenty of fossils from the late Miocene to early Pleistocene so I thought it would be worth a try. They look to be made of compacted sand, like a concrete, but laid down in layers, with a more robust top with lines that have some shell-like material. Most pieces I found have this triangular shape that look like they might have formed tubes. All the pieces I’ve found look like they would have a similar diameter. I’ve never found any smaller. They’re pretty uniform. And common. Since I first noticed them a couple of months ago I find them every time I’m on the beach. They could be the result of a geologic process, but I’ve asked every beachcomber, zoologist, and marine biologist I can can find and no one can tell me what they are.
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Recently found this odd looking rock with a very concrete like feel to it. it has multiple fossils and crystals on it but what is weird is this flower shaped crystal on it.