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stromatolite
This term is primarily used in geological and paleontological contexts to describe specific organosedimentary structures. It carries a strong scientific connotation, evoking images of prehistoric shallow-water environments and the earliest biological footprints in the fossil record.
Because it refers to a physical geological formation, it is treated as a standard countable noun. Researchers typically refer to individual specimens or entire beds of these formations when discussing the geochemical signatures of the Archean Eon.
Meanings
A layered sedimentary formation created by the trapping, binding, and cementation of sedimentary grains by microorganisms, specifically cyanobacteria.
Examples
The museum exhibit features a fossilized stromatolite from the Precambrian era.
Look at these layered structures in the rock; they are actually ancient stromatolites.
Stromatolites are believed to have played a crucial role in oxygenating the early atmosphere.
I wonder if a stromatolite could survive in the harsh conditions of Mars.
The professor explained how cyanobacteria build a stromatolite over thousands of years.
We found several living stromatolites in the shallow waters of Shark Bay.
Is this specimen a true stromatolite or just a similar mineral formation?
The study of the stromatolite provides a window into the earliest forms of life on Earth.