Wavy6830 Wavy6830

16-10-2017
Biology

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Mound-shaped structures composed of alternating layers of bacteria and sediment are called

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Erudite1 Erudite1

23-10-2017

They are called STROMATOLITES.
Stromatolites are layered mounds, column and sheet like sedimentary rocks.They are often formed by the growth of layers upon layers of cyanobacteria. They are commonly found in marine environments. Stromatolites are not true fossils.

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