Hadean


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Related to Hadean: Archean

Ha·de·an

 (hā-dē′ən, hā′dē-)
adj.
Of, relating to, or being the period of time during which Earth formed, from the start of the solar system (4.6 billion years ago) until accretion, impact, and cooling led to stable Earth-Moon orbits and the formation of the earliest rocks on Earth (3.8 billion years ago). See Table at geologic time.

[After Hades, (from the intense heat during part of this period).]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Hadean - the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago); no evidence of life
Adj.1.Hadean - of or relating to or characteristic of Hades or Tartarus
infernal - being of the underworld; "infernal regions"
Translations
Hadéen
References in periodicals archive ?
According to the residents of Rawalpindi most congested and overcrowded area Landa Bazaar, Bhabara Bazaar, Chastain hadean, Tehli Mohalla, the sanitation staff visits their area after weeks and heaps of garbage remains piled up on sides of the roads creating an unbearable stench and giving rise to fears of epidemic diseases.
8 billion years ago, the planet was such a hellish place that geologists call this eon the Hadean after Hades, the Greek god of the underworld.
The findings are part of a paper called "Widespread Mixing and Burial of Earth's Hadean Crust by Asteroid Impacts" published in the journal Nature.
The new research reveals that asteroidal collisions not only severely altered the geology of the Hadean eon Earth, but likely also played a major role in the subsequent evolution of life on Earth as well.
The period is called Hadean eon after the Greek god of the underworld- Hades- for its hot and inhospitable atmosphere.
The findings, in a paper titled "The oxidation state of Hadean magmas and implications for early Earth's atmosphere," have implications for our understanding of how and when life began on this planet and could begin elsewhere in the universe.
Among specific topics are primordial massive supernovae as molecular factories at high redshifts, observational evidence for dust growth in proto-planetary discs, hydrous-carbonaceous meteoroids in the Hadean Aeon, dust in clusters of galaxies, probing dust with gamma-ray bursts, analogs of cosmic dust, intersteller ices, and interstellar dust models and evolutionary implications.
China's deposits are distributed mainly in Maoming, Hadean, Fushun, Longkou, etc.
In Werewolf 2 (2000), the creature's dismembered limbs are paired with such dainty additions as a sprinkling of fake flowers and a window revealing a furry head lit by red, Hadean lights.
The only thing that mars the gravity of the proceedings is a jokey horror-mask of a Hadean god, with a giant pair of gaunt white hands; fortunately the audience on Saturday's opening night had the tact not to laugh.
The earliest evidence of stable continents and oceans and records thought to implicate primitive life seems to point to the late Hadean (the Dark Ages)--early Precambrian era, about 4 billion years ago.