Archean is a 7 letter English word.
You can make 145 anagrams from letters in Archean (aacehnr).
1870-75; Greek archaî(os) ancient (see archaeo-) + -an
Australia is essentially the fragment of a great plateau land of Archean rocks.
These areas of Archean rocks were doubtless once continuous.
With the passing of the Archean, the earth had not yet settled into the perfectly balanced sphere which Nature destined it to be.
It is to this lowermost gneissic group that the term “Archean” may be conveniently limited.
This vast period of time, which includes the beginning, is known among geologists as Archean time.
It is the home of the Archean granite, and its basins are of a fathomless dust.
We are looking now at the close of the era which geologists call Archean, because it is ancient beyond knowledge.
The period following on after Archean time is called, by geologists, Paleozoic time.
At the bottom of the sea were the Archean or igneous rocks, the oldest formation known to geology.
The breaking up of the old Archean foundation block began in Cambrian and Ordovician times.
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