Examples of 'archaean' in a sentence
Meaning of "archaean"
Archaean is an adjective used in geology to describe a specific eon in the Earth's history, characterized by the presence of primitive forms of life and the formation of continents
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- Of, or relating to the geologic eon from about 3,800 to 2,500 million years ago; comprises the Eoarchean, Paleoarchean, Mesoarchean and Neoarchean eras; marked by an atmosphere with little oxygen, the formation of the first continents and oceans and the emergence of simple life.
- The eon from 2,500 Ma to 4,000 Ma.
- Any organism of the domain Archaea.
How to use "archaean" in a sentence
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archaean
Archaean charnockite intrusions are common in the southeast.
Methanogenium boonei is a methanogenic archaean.
Archaean age rocks in which fossils have survived.
The consequences of the discovery of the archaean world are important and still poorly appreciated.
Archaean examples are commonly associated with lode gold deposits.
Molecular ecology studies have revealed very many archaean lines in all terrestrial environments.
Pyrococcus is a genus of Thermococcaceaen archaean.
The city geologically is composed of Archaean gneisses and crystalline schists.
Examination of Archaean sediments appears inconsistent with the hypothesis of high greenhouse concentrations.
Major parts of city are covered by Archaean rocks.
The history of the Archaean cratons is extremely complex and protracted.
By the end of the Archaean c.
The Archaean eon.
The craton is a composite of several different terranes of Archaean metasediments.
The structure of the NADK from the archaean Archaeoglobus fulgidus has been determined.
See also
The geologic record of the Proterozoic is much better than that for the preceding Archaean.
The geology is Archaean gneiss.
However, nobody has ever seen a living Asgard archaean.
The Hadean and Archaean subduction zones.
The oldest rocks are probably derived from early Archaean oceanic crust.
Images of methanotrophic archaean communities and sulfate-reducing bacteria in the sediment.
Siilinjärvi carbonatite in the eastern Finland is an Archaean intrusion.
Lastly, this marine archaean does not sporulate.
Geographically, komatiites are restricted in distribution to the Archaean shield areas.
It only contained archaean fluctuations, much the same as the two of them emanated.
Methanocaldococcus jannaschii ( formerly Methanococcus jannaschii ) is a thermophilic methanogenic archaean in the class Methanococci.
He changed into two serpents, archaean and eukaryotic, and descended into the phospholipid water.
Komatiites occur with other ultramafic and high-magnesian mafic volcanic rocks in Archaean greenstone belts.
Even the phosphoproteome of an archaean organism, namely Halobacterium salinarium, is available.
The Volgo-Uralia region has a thick sedimentary cover, however deep drillings have revealed mostly Archaean crust.
His major interest was in Archaean geology, and in igneous and metamorphic rocks.
Thermal modelling of the Svecofennian orogeny overthrust on Archaean craton, Eastern Finland.
The Dao Will of an archaean can cover the whole world!
Archaean rocks cover roughly one-third of the Precambrian region in the Fennoscandian Shield. Thi.
In taxonomy, Picrophilus is an archaean genus of the family Picrophilaceae.
One salt-loving group of archaea includes Halobacterium, a well-studied archaean.
My enthusiasm for the early Earth, the Archaean rocks, and the meteorites.
In 1943 he published an important work on Archaean sedimentation.
Roughly 3.2 billion years ago, during the Archaean Era, planet Earth began to experience tectonic activity.
Around 2090 Ma, a syntectonic trondhjemitic pluton intruded into the Archaean reelects of the Chegga series.
