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...
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.
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 · Stromatolite literally means “layered rock”. The existence of these ancient rocks extends three-quarters of the way back to the origins of the Solar System. With a citizen scientist’s...
What are Stromatolites? | News | Astrobiology
网页2 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.
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...
Rapid emergence of life shown by discovery of 3,700-million ... - Nature
网页2016年8月31日 · Stromatolites are sedimentary formations created by the layered growth of microorganisms in shallow marine settings. Fossil stromatolites constitute some of the earliest...
Stromatolite - an overview | ScienceDirect Topics
网页Stromatolites are microbial deposits with distinct stratification, built using detrital, mixed, or entirely calcareous material. They are centimeters to meters in height, with laminae ranging from millimeters to centimeters in size. Stromatolites are commonly found in subtidal to intertidal settings and exhibit fenestral fabrics.
Stromatolites - SpringerLink
网页Stromatolites are Earth’s earliest and most persistent reefs. They are conspicuous and widespread components of Precambrian carbonate platforms and are still forming in modern environments (Figure 1).
Stromatolites - SpringerLink
网页2021年12月28日 · Stromatolites are morphologically circumscribed accretionary growth structures with a primary lamination that is, or may be, biogenic. They form centimeter- to decimeter-scale domes, cones, columns, and planiform surfaces made of carbonate layers.