Paleoproterozoic Era

E44484

geologic era subdivision of the Proterozoic Eon

The Paleoproterozoic Era was an early division of Earth's history marked by the stabilization of continental cratons, widespread banded iron formations, and the Great Oxidation Event that significantly increased atmospheric oxygen.

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All labels observed (5)

Label	Occurrences
Paleoproterozoic Era canonical	12
Paleoproterozoic	4
Paleoproterozoic Eon	2
Paleoproterozoic eon	2
Paleoproterozoic era	1

Statements (50)

Predicate	Object
instanceOf	geologic era ⓘ subdivision of the Proterozoic Eon ⓘ
associatedWithLife	cyanobacterial mats ⓘ early eukaryote fossils (possible) ⓘ prokaryotic life ⓘ stromatolite abundance ⓘ
containsEvent	Great Oxidation Event ⓘ Huronian glaciation ⓘ Lomagundi–Jatuli carbon isotope excursion ⓘ major orogenic events on several cratons ⓘ
containsSubdivision	Orosirian Period ⓘ Rhyacian Period ⓘ Siderian Period ⓘ Statherian Period ⓘ
duration	about 900 million years ⓘ
endTime	approximately 1.6 billion years ago ⓘ
fieldOfStudy	geology ⓘ paleobiology ⓘ paleoclimatology ⓘ
follows	Archean Eon ⓘ
hasConsequence	change in ocean chemistry ⓘ cooling of global climate ⓘ drawdown of atmospheric methane ⓘ possible trigger of Paleoproterozoic glaciations ⓘ widespread oxidation of iron in oceans ⓘ
hasFeature	abundant banded iron formations in marine sediments ⓘ decline of banded iron formations toward its end ⓘ formation of red beds ⓘ oxidation of surface environments ⓘ rise of atmospheric oxygen above trace levels ⓘ sulfur mass-independent fractionation decline ⓘ
hasGeologicalRecord	extensive metamorphic belts ⓘ large igneous provinces ⓘ rocks preserved on multiple cratons worldwide ⓘ
hasImpact	establishment of modern-style biosphere–geosphere interactions ⓘ long-term habitability of Earth ⓘ
hasKeyFeature	first long-lived continental cratons ⓘ
hasKeyProcess	biological production of oxygen by cyanobacteria ⓘ development of plate tectonic style similar to modern ⓘ global-scale orogeny ⓘ growth of continental crust ⓘ intense weathering of continental surfaces ⓘ large-scale glaciations ⓘ oxygenation of Earth’s atmosphere ⓘ stabilization of continental cratons ⓘ widespread formation of banded iron formations ⓘ
namedAfter	Greek words for "ancient" and "earlier life" ⓘ
partOf	Proterozoic Eon ⓘ
precedes	Mesoproterozoic Era ⓘ
startTime	approximately 2.5 billion years ago ⓘ

Referenced by (21)

Full triples — surface form annotated when it differs from this entity's canonical label.

Proterozoic Eon → subdivision → Paleoproterozoic Era ⓘ

Vredefort Dome → geologicalPeriod → Paleoproterozoic Era ⓘ

this entity surface form: Paleoproterozoic

Precambrian Supereon → contains → Paleoproterozoic Era ⓘ

supercontinent Columbia (Nuna) → formedIn → Paleoproterozoic Era ⓘ

subject surface form: Columbia

this entity surface form: Paleoproterozoic eon

supercontinent Columbia (Nuna) → formedIn → Paleoproterozoic Era ⓘ

subject surface form: Nuna

this entity surface form: Paleoproterozoic eon

Mesoproterozoic Era → follows → Paleoproterozoic Era ⓘ

Great Oxidation Event → partOf → Paleoproterozoic Era ⓘ

this entity surface form: Paleoproterozoic era

Great Oxidation Event → timePeriod → Paleoproterozoic Era ⓘ

this entity surface form: Paleoproterozoic

Statherian Period → partOf → Paleoproterozoic Era ⓘ

Statherian Period → geologicEra → Paleoproterozoic Era ⓘ

Siderian Period → partOf → Paleoproterozoic Era ⓘ

Siderian Period → era → Paleoproterozoic Era ⓘ

Rhyacian Period → partOf → Paleoproterozoic Era ⓘ

Rhyacian Period → era → Paleoproterozoic Era ⓘ

Orosirian Period → partOf → Paleoproterozoic Era ⓘ

Huronian glaciation → geologicalEon → Paleoproterozoic Era ⓘ

this entity surface form: Paleoproterozoic Eon

Huronian glaciation → geologicalEra → Paleoproterozoic Era ⓘ

Lomagundi–Jatuli carbon isotope excursion → geologicalAge → Paleoproterozoic Era ⓘ

this entity surface form: Paleoproterozoic Eon

Mesabi Range → geologicAge → Paleoproterozoic Era ⓘ

this entity surface form: Paleoproterozoic

Neoarchean Era → precedes → Paleoproterozoic Era ⓘ

East European Craton → hasGeologicalAge → Paleoproterozoic Era ⓘ

this entity surface form: Paleoproterozoic