411 REFERENCE · Wiktionary
Hadean time
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Proper noun
en geology The geologic eon from about 4,600 to 3,800 million years ago, marked by the formation of the first rocks.
en 1998 Graham R. Thompson; Jonathan Turk Introduction to Physical Geology 150 It may be that erosion or metamorphism destroyed traces of Hadean life, or that Hadean time preceded the evolution of life. In any case, Hadean time is not amenable to subdivision based on fossils.
Synonyms
en Hadean
Translations
Hadean
Anagrams
en aadeehimnt ethanamide