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Boxley quarry yields two-ton stromatolite

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By John Barnhart

It looks a bit like a flying saucer, but it has nothing to do with outer space. It's a stromatolite and it came out of the Boxley Quarry located off U. S. 460 right on the western edge of Bedford County.

What's a stromatolite?

Stromatolites are formed by mats of blue-green algae, also known as cyanobacteria. These microbes have chlorophyll and produce oxygen via as a byproduct of photosynthesis. They also secrete carbonate minerals which, mixed with any sediment that gets mixed up with the bacterial mat, form layers of stone.


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The Bedford Bulletin | circulation@bedfordbulletin.com | 540-586-8612
P.O. Box 331, 402 E Main St. Bedford, VA 24523
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