[TigersEye]

I’d like to see it in comparison to a modern map or aerial photograph of the area in question so I could apply my own judgment of how much resemblance there is.

[Antonello]

I’d like to see it in comparison to a modern map or aerial photograph of the area in question so I could apply my own judgment of how much resemblance there is.

Here is a comparison photo of the supposed mapped region:

At this resolution it takes me an awful lot of creative license to discern any feature similarities.

As an additional note, I am completely puzzled at how a sedimentary formation (dolomite) can be accurately dated, since it is by definition formed from existing, older materials. It is also worth mentioning that diopside, far from being the extraordinarily hard substance the article portrays, is a soft semiprecious jade-like mineral. It is so soft, in fact, that special care must be taken when cutting it into faceted pieces for jewelery lest the stone be scratched and ruined. Oh, and that thin coating of 'porcelain calcium' looks more like partial erosion of a calcite layer of the dolomite itself.

Regardless of the actual or apparent age of the slab, without a more clear and detailed photo of the claimed topographical relief map (not to mention of the potentially more telling hieroglyphic markings), I am skeptical that it is anything other than a natural sedimentary rock formation.