- Hadean, the Archean, and the Proterozoic), it is
sometimes described as a
supereon, but this is also an
informal term, not
defined by the ICS in its chronostratigraphic...
-
followed by the Phanerozoic, and is the most
recent part of the
Precambrian "
supereon". The
Proterozoic is
subdivided into
three geologic eras (from
oldest to...
- by the Cretaceous–Paleogene
extinction event. The
largest unit is the
supereon,
composed of eons. Eons are
divided into eras,
which are in turn divided...
- in
Andhra Pradesh, India. The
ranges were
formed during the
Precambrian supereon (3.8
billion to 539
million years ago).
Minerals contained in
these hills...
- the
Cambrian is
often referred to as the
Precambrian or pre-Cambrian (
Supereon).
While a
modern geological time
scale was not
formulated until 1911 by...
-
overall size. c. 4,533 Ma – The
Precambrian (to c. 539 Ma), now
termed a "
supereon" but
formerly an era, is
split into
three geological time
intervals called...
-
billion to 538.8
million years ago. It is the last era of the
Precambrian Supereon and the
Proterozoic Eon; it is
subdivided into the Tonian, Cryogenian,...
- The ba****t rock of most of
Africa was
formed during the
Precambrian supereon and is much
older than the
Atlas Mountains lying on the continent. The...
-
Acastan Period — 4031–3810 Mya
Isuan Period — 3810–3600 Mya
Precambrian Supereon (4600-539 Mya)
Hadean Eon (4600-4031 Mya)
Archean Eon (4031-2500 Mya) Paleoarchean...
-
eruptions are well-established. Geochronology, from
largest to smallest:
Supereon Eon Era
Period Epoch Age
Chron It is
important not to
confuse geochronologic...
