- The
Eoarchean (IPA: /ˌiːoʊ.ɑːrˈkiːən/ EE-oh-ar-KEE-ən; also
spelled Eoarchaean) is the
first era of the
Archean Eon of the
geologic record. It
spans 431...
-
Eoarchean geology is the
study of the
oldest preserved crustal fragments of
Earth during the
Eoarchean era from 4.031 to 3.6
billion years ago.
Major well-preserved...
- Windley, BF; Kusky, T; Polat, A (2021). "Onset of
plate tectonics by the
Eoarchean".
Precambrian Res. 352: 105980. Bibcode:2021PreR..35205980W. doi:10.1016/j...
-
Neoarchean (2.5–2.8 Ga)
Mesoarchean (2.8–3.2 Ga)
Paleoarchean (3.2–3.6 Ga)
Eoarchean (3.6–4 Ga)
Hadean Eon (4–4.6 Ga) ka =
kiloannum (thousand
years ago);...
-
Neoarchean (2.5–2.8 Ga)
Mesoarchean (2.8–3.2 Ga)
Paleoarchean (3.2–3.6 Ga)
Eoarchean (3.6–4 Ga)
Hadean Eon (4–4.6 Ga) ka =
kiloannum (thousand
years ago);...
- with the
formation of the
Earth about 4.6
billion years ago, and the
Eoarchean,
starting 4
billion years ago, and part of the
Paleoarchean era, starting...
-
equivalent to a
chronostratigraphic erathem.
There are ten
defined eras: the
Eoarchean, Paleoarchean, Mesoarchean, Neoarchean, Paleoproterozoic, Mesoproterozoic...
-
meaning "dawn"), used to
describe many
early animals in the
fossil record Eoarchean, the
first era of the
Archean Eon
Earth observation Electro-optics Eosinophilic...
-
evidence of life
dates at
least from 3.7 billion
years ago,
during the
Eoarchean era
after a
geological crust started to
solidify following the earlier...
- then it
could be
common in the universe." c. 4,031 Ma –
Archean Eon and
Eoarchean Era start.
Possible first appearance of
plate tectonic activity in the...
