What are strolatomites?

Answer 1

Stromatolites are layered sedimentary formations created by the activity of microbial communities, primarily cyanobacteria. These microorganisms trap and bind sediment particles, resulting in the gradual accumulation of calcium carbonate or other minerals. Found in shallow marine environments, stromatolites provide important insights into early life on Earth, as they are among the oldest known fossils, dating back over 3.5 billion years. Their unique structures and growth patterns offer clues about ancient ecosystems and the conditions of the early Earth.