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lissof




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PostPosted: Feb 28, 2017 06:17    Post subject: What is this?  

please can you tell me what is this? thanks


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marco campos-venuti




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PostPosted: Feb 28, 2017 08:52    Post subject: Re: what is this?  

It look as a calcareous deposition on a pebble. Quite probably of biological origin. I would say cyanobacteria. So you would have a young oncolite.
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lissof




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PostPosted: Feb 28, 2017 14:47    Post subject: Re: What is this?  

thank you
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