- 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...
- crust. The
presence of
grains of the
mineral zircon of
Hadean age in
Eoarchean sedimentary rocks suggests that at
least some
felsic crust existed as...
- Windley, BF; Kusky, T; Polat, A (2021). "Onset of
plate tectonics by the
Eoarchean".
Precambrian Research. 352: 105980. Bibcode:2021PreR..35205980W. doi:10...
-
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);...
- 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);...
- −500 — – — – 0 —
Precambrian Hadean Archean Proterozoic Phaner ozoic Eoarchean Paleoarchean Mesoarchean
Neoarchean Paleoproterozoic Mesoproterozoic...
-
equivalent to a
chronostratigraphic erathem.
There are ten
defined eras: the
Eoarchean, Paleoarchean, Mesoarchean, Neoarchean, Paleoproterozoic, Mesoproterozoic...
-
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...
