Definition of Archaean. Meaning of Archaean. Synonyms of Archaean

Here you will find one or more explanations in English for the word Archaean. Also in the bottom left of the page several parts of wikipedia pages related to the word Archaean and, of course, Archaean synonyms and on the right images related to the word Archaean.

Definition of Archaean

Archaean
Archaean Ar*ch[ae]"an, n. (Geol.) The earliest period in geological period, extending up to the Lower Silurian. It includes an Azoic age, previous to the appearance of life, and an Eozoic age, including the earliest forms of life. Note: This is equivalent to the formerly accepted term Azoic, and to the Eozoic of Dawson.

Meaning of Archaean from wikipedia

- consensus. › The Archean Eon ( /ɑːrˈkiːən/ ar-KEE-ən, also spelled Archaean or Archæan) is one of the four geologic eons of Earth's history, occurring 3...
- early from the Archaea, and that eukaryotes arose through fusion of an archaean and eubacterium, which became the nucleus and cytoplasm; this hypothesis...
- Archaean may refer to: Archaean or Archean, a geologic eon between Hadean and Proterozoic Something related to Archaea, a domain of single-celled microorganisms...
- more recent works geologists often refer to both Ur and other proposed Archaean continental ****emblages as supercratons. Ur can, nevertheless, be half...
- Rocks of almost all geological ages are represented at outcrop, from the Archaean onwards. Seismographical research shows that the crust of the Earth below...
- of a billion years ago Ur – Proposed archaean supercontinent from about 3.1 billion years ago Vaalbara – Archaean supercontinent from about 3.6 to 2.7...
- There has been some debate as to when and even if Vaalbara existed. An Archaean-Palaeoproterozoic (2.8–2.1 Gya) link between South Africa and Western Australia...
- volcanic sequences with ****ociated sedimentary rocks that occur within Archaean and Proterozoic cratons between granite and gneiss bodies. The name comes...
- Plate. Australia's geology can be divided into several main sections: the Archaean cratonic shields, Proterozoic fold belts and sedimentary basins, Phanerozoic...
- unusual morphologies (such as the square, flat box-shaped cells of the archaean genus Haloquadratum). Arrangements include pairs, tetrads, clusters, chains...
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