Archeozoic or Ar·chae·o·zo·ic [ahr-kee- uh- zoh-ik] Geology EXAMPLES | WORD ORIGIN adjective noting or pertaining to the earlier half of the Precambrian Era, from about 5 billion to 2.5 billion years ago, during which the earliest datable rocks were formed and from which the oldest known fossil forms, blue-green algae and bacteria, have been recovered. noun the Archeozoic division of geologic time or the rock systems formed then. Origin of Archeozoic 1870–75; archeo-
) life +
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for archeozoic Historical Examples of archeozoic
But how may we separate the Proterozoic rocks from the
Archeozoic, no evidence of glaciation has yet been discovered. Archeozoic , the era in which the simplest forms of life originated.
Even in the
Archeozoic the rocks testify to a climate seemingly not greatly different from that of the average of geologic time. Archeozoic rocks have been studied minutely over a very small percentage of the earth's land surface. British Dictionary definitions for archeozoic
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