Stromatolite - Wikipedia
网页Stromatolites (/ stroʊˈmætəˌlaɪts, strə -/ stroh-MAT-ə-lytes, strə-) [2][3] or stromatoliths (from Ancient Greek στρῶμα (strôma), GEN στρώματος (strṓmatos) 'layer, stratum' and λίθος (líthos) 'rock') [4] are layered sedimentary formations (microbialite) that are created mainly by photosynthetic microorganisms such as cyanobacteria, sulfate-reduc...
Stromatolites – The Earliest Fossils - Science Notes and Projects
网页2024年3月10日 · Stromatolites are layered accretions of microorganisms, primarily cyanobacteria, mixed with sedimentary grains. These formations often occur in shallow water environments. They are one of the earliest forms of life on Earth that existed well before more complex organisms appeared.
Stromatolites: The Earth’s oldest living lifeforms - BBC
网页2021年1月18日 · In Western Australia, 3.5bn-year-old stromatolites built up the oxygen content of the Earth’s atmosphere to about 20%, giving the kiss of life to all that was to evolve.
Stromatolite | Fossilized, Microbial Mats | Britannica
网页stromatolite, layered deposit, mainly of limestone, formed by the growth of blue-green algae (primitive one-celled organisms). These structures are usually characterized by thin, alternating light and dark layers that may be flat, hummocky, or dome-shaped.
What Happened to the Stromatolites, the Most Ancient Visible …
网页2013年5月30日 · Stromatolites, also known as layered rocks, form in shallow waters when biofilms of living microorganisms, like cyanobacteria, trap sediment. Most stromatolites grow in extremely salty lagoons or...
World’s Oldest Fossils Discovered Due to Climate Change
网页2016年9月1日 · The fossils are known as stromatolites and are the evidence of ancient water-based bacterial colonies, which cemented sediments together into distinctive layers with carbonate. Before this new...
Stromatolites Stones: Properties, Formation, Locations - Geology …
网页2024年7月1日 · Stromatolites are layered structures formed by the growth of cyanobacteria (formerly called blue-green algae) in shallow water environments. These microbial mats trap and bind sediment, creating distinct layered structures that can range from centimeters to meters in height.
What are Stromatolites? | News | Astrobiology
网页5 天之前 · Insight into living examples of ancient microbial ecosystems. Stromatolites are one of the oldest ecosystems on Earth. These structures are made by the activities of microbes.
Rapid emergence of life shown by discovery of 3,700-million ... - Nature
网页2016年8月31日 · Stromatolite fossils formed around 3,700 million years ago in what is now Greenland predate the previous oldest fossil evidence for life on Earth by more than 200 million years.
The Meaning of Stromatolites | Annual Reviews
网页Stromatolites document microbial interactions with sediments and flowing water throughout recorded Earth history and have the potential to illuminate the long-term history of life and environments.
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