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flint


when I first found the banded stuff, I thought on the same lines as you, but than a friend said they are stromatolites. but I can't explain to myself the "swirl", the bands display at the 1st pic.

pic 3 though is petrified wood, and I think the quality and colour of it, makes you think otherwise. the specimen is harder than glass, and would be ideal for flint napping. I am wood worker by trade, and I can clearly, make out year rings at the ends, but it sure doesn't look like most other petrified wood, I have seen. it for example doesn't display a single conchoidal fracture...

cheers for your input!

I will upload more finds from this spot in given time.

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flint
hi!
 

I researched a new area, and here are my finds.

is this a stromatolite?

coin diameter = 2cm.

 

[attach:fileid=http://www.discussfossils.com/forum/uploads/667/stromatolite_stony_creek.JPG]
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flint
some more from the same area.
 

[attach:fileid=http://www.discussfossils.com/forum/uploads/667/stromatolite_stony_creek2.JPG][attach:fileid=http://www.discussfossils.com/forum/uploads/667/petrified_wood_stony_creek.JPG][attach:fileid=http://www.discussfossils.com/forum/uploads/667/stony_creek2.JPG]
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flint
pic 1 stromatolites
pic 2 stromatolites

pic 3 petrified wood

pic 4 coral ?
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acutipuerilis

Hmm... not convinced. The first two look like just a well-bedded mudstone with pale sandy laminae (you can see small bits of load casting in places). The third looks like wood, but I don't reckon it's petrified - more likely a pith cast of something Devonian or Carboniferous. The last I'm going to pass on, but it looks dubious for coral given the lack of septae. Possibly colonial serpulid? Perhaps more likely, though, is borings in a limestone layer.
http://oldasthehills.proboards.com/index.cgi (For when you can't get enough trilobites, sponges, and squidgy blobs...)
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