- The
Siderian Period ( /saɪˈdɪəri.ən, sɪ-/;
Ancient Gr****: σίδηρος, romanized: sídēros,
meaning "iron") is the
first geologic period in the Paleoproterozoic...
- 6 Ga). It is
further subdivided into four
geologic periods,
namely the
Siderian, Rhyacian,
Orosirian and Statherian.
Paleontological evidence suggests...
-
which produced the 300 million years-long
Huronian glaciation (during the
Siderian and
Rhyacian periods of the Paleoproterozoic) and the
hypothesized Snowball...
- Ma)
Kratian (no
fixed time given,
prior to the
Siderian) – from Gr**** κράτος (krátos) 'strength'.
Siderian (?–2450 Ma) –
moved from
Proterozoic to end of...
-
extended from
approximately 2.5 to 2.2 billion
years ago (Gya),
during the
Siderian and
Rhyacian periods of the
Paleoproterozoic era.
Evidence for glaciation...
-
Great Oxygenation Event,
produced by the
proliferation of
algae during the
Siderian period,
required about 300 million
years to culminate. The
present era...
-
bacteria and algae. c. 2,500 Ma –
Proterozoic Eon,
Paleoproterozoic Era, and
Siderian Period start.
Oxygen saturation in the
oceans is reached:
Banded iron formations...
-
Eoarchean Paleoarchean Mesoarchean Neoarchean Proterozoic Paleoproterozoic Siderian Rhyacian Orosirian Statherian Mesoproterozoic Calymmian Ectasian Stenian...
- This
began approximately 2.460–2.426 Ga (billion years) ago
during the
Siderian period and
ended approximately 2.060 Ga ago
during the Rhyacian. Geological...
- Ga)
Calymmian (1.4–1.6 Ga)
Paleoproterozoic (1.6–2.5 Ga)
Statherian (1.6–1.8 Ga)
Orosirian (1.8–2.05 Ga)
Rhyacian (2.05–2.3 Ga)
Siderian (2.3–2.5 Ga)...
