Definition of stromatolite
: a laminated usually mounded sedimentary fossil formed from layers of cyanobacteria, calcium carbonate, and trapped sediment
stromatoliticplay \-ˌma-tə-ˈli-tik\ adjective
Recent Examples of stromatolite from the Web
The researchers also found signs of stromatolites living near the hot springs.
The region is full of, stromatolites, layered mounds or sheets of rock that were produced by ancient photosynthesizing bacteria that grew in moist mats and trapped layers of sediments over time.
Ancient rocks in Greenland that date to 3.7 billion years ago contain hints of microbial mats of cyanobacteria known as stromatolites, while another formation in Quebec may date back 4.28 billion years.
Stromatolites today are often found in saltwater environments, which is why scientists have for decades assumed that the Dresser Formation was once an ocean shoreline.
Even more intriguing is the story told by the simultaneous existence of these organisms and a completely different type of photosynthetic life-form that created the 3.7-billion-year-old microbial mats, called stromatolites.
Stromatolites are another type of formation that are prime real estate for extant life.
But even with samples from our home planet, not all scientists are convinced that these ancient structures are fossils, since stromatolites can form without the assistance of microbial mats.
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Origin and Etymology of stromatolite
Latin stromat-, stroma bed covering + English -o- + -lite
First Known Use: 1930See Words from the same year
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