What are stromatolites?

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asked Oct 24, 2019 41.8k views

2 Answers

Aceminer · Answer 1 · 2019-10-25T21:08:10+0000

A calcareous mound built up of layers of lime-secreting cyanobacteria and trapped sediment, found in Precambrian rocks as the earliest known fossils, and still being formed in lagoons in Australasia.

Mike Cluck · Answer 2 · 2019-10-30T20:47:35+0000

Answer:

layered mounds of calcium carbonate that were deposited by algae during the Precambrian time

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What are stromatolites?

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