Archean – מילון אנגלי-אנגלי
archean
adj.
(Geology) of or pertaining to the earliest known forms of rocks; of or belonging to the earlier of the two divisions of Precambrian time
Archean
The
Archean Eon (, also spelled
Archaean) is a
geologic eon, , following the
Hadean Eon and preceding the
Proterozoic Eon. During the Archean, the earth's
crust and layers had just formed, making the Earth much cooler than it was during the Hadean and allowing the formation of continents.
Archean
Noun
1. the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life
(synonym) Archean eon, Archean aeon, Archeozoic, Archaeozoic, Archeozoic eon, Archaeozoic aeon
(hypernym) eon, aeon
(part-holonym) Precambrian, Precambrian eon, Precambrian aeon, Precambrian period
archean
Adjective
1. used of the earliest known rocks
(synonym) archaean
(similar) early
(classification) geology
ARCHEAN
ARCHEANO
archean
adj.
(geologi) arkeikum, av eller vedrørende de tidligste typene stein; av eller som tilhører tidlig prekambrium
