Thursday, January 15, 2015

Interesting rock from St. Paulo-Brazil

Reader Dr Joseph writes that this was found in a field inside the town. Any comments?

3 comments :

  1. The polish looks man made.

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  2. Can you guess? I thought it an interesting example of how scale is deduced from subtle things. Here, the fabric appears to be a good quality cotton sheet. The dimensions of the folds suggests this is a large heavy rock.
    Maybe I am wrong. I am guessing 11" top-to-bottom.


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