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Shark Bay Oncolite


sandgroper

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G'day all,

I recently returned from a fishing trip to Shark Bay, about an 800km drive north from where I live where I picked up these nice Oncolite fossils. The patterns are very nice and quite colourful, they would probably look good polished but I think I prefer their natural state. Just thought I'd share these couple of pics,

Cheers, Dave.

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Interesting! Howd you go in the fishing department?

Those would make a realllly nice floor :D

"Faith is to believe what you do not see; the reward of this faith is to see what you believe" - Saint Augustine

"Those who can not see past their own nose deserve our pity more than anything else."

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The fishing went well mate, plenty of big pinkies, mackeral, tuna, trevally, cobia, tailor, estuary cod and loads of sharks. .........Those oncolites would look great on a floor as polished tiles, might take a trailer when I go next!

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Those are neat. I am curious about some of the angular/polygonal structures in them as the oncolites I've seen are mostly spherical....hmm...I'm wondering how they develop or what they are composed of.... I'm wondering if that is some kind of stromatolitic structure or is something else going on that causes that?

Cool finds--I'm liking them alot. Regards, Chris

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Thanks for the comments Chris, I've heard these described as Oncolite Stromatolites and there are many fossilized Stromatolites in this area. Shark Bay is one of a handful of places that has living Stromatolites, it is an area that just has the right conditions for them to still survive, it is warm, very sunny with the right salinity levels in the seawater as the bays are quite shallow. Cheers mate.

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Very nice thanks for sharing.

I think that personally I would keep one in its current form and polish one (best of both worlds)

Regards

Mike

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