stromatolite

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The bulk of a stromatolite colony consists of layers of calcium carbonate interspersed with mattes deposited by the cyanobacteria.

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Definitions (1)

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  1. noun A widely distributed sedimentary structure consisting of laminated carbonate or silicate rocks, produced over geologic time by the trapping, binding, or precipitating of sediment by groups of microorganisms, primarily cyanobacteria.

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Examples (2)

  • The bulk of a stromatolite colony consists of layers of calcium carbonate interspersed with mattes deposited by the cyanobacteria. —  Recently Uploaded Slideshows
  • The patch, called a stromatolite, formed millions of years ago when that section of land was under water. —  MPNnow Home RSS
 

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Etymologies (1)

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  1. Late Latin strōma, strōmat-, covering; see stroma + -lite.
 

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