Definition of Archean. Meaning of Archean. Synonyms of Archean

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Definition of Archean

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Meaning of Archean from wikipedia

- The Archean Eon ( /ɑːrˈkiːən/ ar-KEE-ən, also spelled Archaean or Archæan), is one of the four geologic eons of Earth's history, occurring 3,875 to 2...
- an informal unit of geologic time, subdivided into three eons (Hadean, Archean, Proterozoic) of the geologic time scale. It spans from the formation of...
- HAY-dee-ən, hay-DEE-ən) is a geologic eon of the Earth pre-dating the Archean. It began with the formation of the Earth about 4.6 billion years ago and...
- more complete than that for the preceding Archean Eon. In contrast to the deep-water deposits of the Archean, the Proterozoic features many strata that...
- pla**** a role in demarcating the differences between the eras. The Hadean, Archean and Proterozoic eons were as a whole formerly called the Precambrian. This...
- Archean Soundtrack are a British rock/hip hop band from London, England. It was formed by actors from the accredited East 15 Acting School in 2009. Archean...
- formation of the planet and ended 4.0 billion years ago. The following Archean and Proterozoic eons produced the beginnings of life on Earth and its earliest...
- The first large cratonic landm****es formed during the Archean eon. During the early Archean, Earth's heat flow was nearly three times higher than it...
- Post Archean (after 2.5 Ga) TTG rocks are present in arc-related batholiths, as well as in ophiolites (although of a small proportion), while Archean TTG...
- with later intrusions of basaltic ****s and granite magma. Gneisses of Archean and Proterozoic age occur in the Baltic Shield. List of rock types Acasta...
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