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Name:
Asperia ashburtoni
Age: Precambrian
Formation: Duck Creek Dolomite, Wyloo Group
Location: Paraburdoo, Western Australia
Size: Slab is 2.9 inches tall
Here is a very interesting stromatolite from the Precambrian of Australia. Authorities believe that stromatolites were formed by masses of green or blue-green algae, or ''cyanobacteria''. This stromatolite is estimated to be 2 billion years old! These closely packed stromatolites are believed to have been deposited in conditions that subjected them to intermittent periods of submergence, possibly seasonal in nature. This chunk of stromatolite has been sliced with a diamond saw and highly polished on one side for optimal display. The layered pattern of the stromatolites is easily seen, and the different colors of mineral replacement are nicely showcased. This is a very distinct stromatolite specimen from an unusual location.
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