Orosirian Period

E226915

The Orosirian Period is a division of early Earth's history marked by significant crustal stabilization, widespread orogeny, and major impact events roughly 2.05 to 1.8 billion years ago.

All labels observed (1)

Label Occurrences
Orosirian Period canonical 3

How this entity was disambiguated

Statements (40)

Predicate Object
instanceOf Paleoproterozoic period ⓘ
geologic period ⓘ
associatedWith large impact structures on Earth ⓘ
orogenic belts on early Earth ⓘ
belongsToChronoUnit Paleoproterozoic time interval ⓘ
characterizedBy crustal stabilization ⓘ
development of stable continental platforms ⓘ
large-scale mountain building ⓘ
major impact events ⓘ
stabilization of continental cratons ⓘ
widespread orogeny ⓘ
chronologicalOrderInProterozoic second era-level subdivision of Proterozoic when counting from oldest to youngest ⓘ
chronostratigraphicUnit system ⓘ
definedBy absolute radiometric ages ⓘ
endTime 1.8 billion years ago ⓘ
1800 million years ago ⓘ
environmentalContext oxygenated but still evolving atmosphere ⓘ
stabilizing climate compared to Archean ⓘ
followedBy Statherian Period ⓘ
follows Rhyacian Period ⓘ
geologicAge Paleoproterozoic ⓘ
geologicSignificance important for early Proterozoic tectonics ⓘ
major phase of continental assembly ⓘ
hasStratigraphicRank period ⓘ
linkedTo global tectonic reorganization ⓘ
growth of continental crust ⓘ
stabilization of Archean cratons ⓘ
namedAfter Orosirian (from Greek oros meaning mountain) ⓘ
partOf Paleoproterozoic Era ⓘ
Precambrian Supereon ⓘ
Proterozoic Eon ⓘ
early Proterozoic ⓘ
positionInPaleoproterozoic third period ⓘ
precededBy Siderian Period ⓘ
startTime 2.05 billion years ago ⓘ
2050 million years ago ⓘ
temporalRelation after Great Oxidation Event ⓘ
before Mesoproterozoic Era ⓘ
timeSpan approximately 250 million years ⓘ
usedIn international geologic timescale ⓘ

How these facts were elicited

Referenced by (3)

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

Paleoproterozoic Era → containsSubdivision → Orosirian Period ⓘ
Statherian Period → follows → Orosirian Period ⓘ
Rhyacian Period → followedBy → Orosirian Period ⓘ