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Geology, Palaeontology & Archaeology / Help! Can anyone help identify these pictures please?
« on: 20/04/2011 23:09:50 »
Reaching? For the cast and the mold to both be present, the shell would have to have been there during at least the beginnings of chert formation. If the shell were not present during silica deposition it would be more likely that the interior mold would be fused to the silica. Here they are separate.
If youre referring to the chert being a spiculite, that is speculation (or is it spiculation?), as can be inferred from my post.
See if I ever agree with YOU again.
If youre referring to the chert being a spiculite, that is speculation (or is it spiculation?), as can be inferred from my post.
See if I ever agree with YOU again.