Precambrian Supereon

E42694

geological time interval supereon

The Precambrian Supereon is the vast span of Earth's early history before the Phanerozoic, encompassing the Hadean, Archean, and Proterozoic eons during which the planet formed, life first appeared, and early continents and atmospheres developed.

Try in SPARQL Jump to: Surface forms Statements Referenced by

All labels observed (8)

Label	Occurrences
Precambrian	34
Precambrian Supereon canonical	10
Precambrian Eon	3
Precambrian geology	1
Precambrian or early Cambrian	1
Precambrian stratigraphy	1
Precambrian time	1
Precambrian time scale	1

Statements (49)

Predicate	Object
instanceOf	geological time interval ⓘ supereon ⓘ
alsoKnownAs	Cryptozoic ⓘ Precambrian Supereon ⓘ surface form: Precambrian
boundaryDefinedBy	base of Cambrian Period at 541 Ma ⓘ
characterizedBy	Great Oxidation Event ⓘ appearance of eukaryotes ⓘ appearance of multicellular organisms ⓘ dominance of microbial life ⓘ lack of abundant shelly fossils ⓘ major crustal differentiation ⓘ oxygenation of atmosphere ⓘ scarce fossil record ⓘ stabilization of continental cratons ⓘ
contains	Neoproterozoic Era ⓘ surface form: Cryogenian Period Neoproterozoic Era ⓘ surface form: Ediacaran Period Eoarchean Era ⓘ Hadean time interval ⓘ Mesoarchean Era ⓘ Mesoproterozoic Era ⓘ Archean Eon ⓘ surface form: Neoarchean Era Neoproterozoic Era ⓘ Paleoarchean Era ⓘ Paleoproterozoic Era ⓘ
covers	development of early atmosphere ⓘ development of early oceans ⓘ early Earth history ⓘ evolution of early life ⓘ formation of Earth ⓘ formation of first continents ⓘ origin of life ⓘ
duration	about 4 billion years ⓘ
endTime	about 541 million years ago ⓘ
followedBy	Paleozoic Era ⓘ surface form: Paleozoic Era (within Phanerozoic)
follows	none (represents earliest Earth history) ⓘ
geologicTimeRank	supereon (largest formal division) ⓘ
includes	Archean Eon ⓘ Hadean Eon ⓘ Proterozoic Eon ⓘ
includesEvent	Snowball Earth glaciations ⓘ emergence of Ediacaran biota ⓘ formation of banded iron formations ⓘ formation of first stable continental crust ⓘ
location	Earth ⓘ
partOf	geologic time scale ⓘ
precededBy	no earlier formal eon ⓘ
precedes	Phanerozoic Eon ⓘ
significance	covers about 88 percent of Earth history ⓘ
startTime	about 4.6 billion years ago ⓘ

How these facts were elicited

The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.

Instruction

You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10.

# Requirements
- If you don't know the subject at all, return an empty list.
- If the subject is not a named entity, return an empty list.
- Include at least one triple where predicate is "instanceOf".
- Do not get too wordy.
- Separate several objects into multiple triples with one object.

Input

Subject: Precambrian Supereon
Description of subject: The Precambrian Supereon is the vast span of Earth's early history before the Phanerozoic, encompassing the Hadean, Archean, and Proterozoic eons during which the planet formed, life first appeared, and early continents and atmospheres developed.

Referenced by (52)

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

Proterozoic Eon → partOf → Precambrian Supereon ⓘ

Evolving Planet → coversTimePeriod → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Phanerozoic Eon → follows → Precambrian Supereon ⓘ

Anti-Atlas → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Precambrian Supereon → alsoKnownAs → Precambrian Supereon ⓘ

this entity surface form: Precambrian

International Chronostratigraphic Chart → includes → Precambrian Supereon ⓘ

this entity surface form: Precambrian Eon

Archean Eon → partOf → Precambrian Supereon ⓘ

supercontinent Pannotia → assembledNearEndOf → Precambrian Supereon ⓘ

subject surface form: Pannotia

Neoproterozoic Era → partOf → Precambrian Supereon ⓘ

Bohemian Massif → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Devils Marbles → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Blue Ridge Mountains → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Guiana Shield → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Baltica → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Baltica → formedIn → Precambrian Supereon ⓘ

this entity surface form: Precambrian Eon

Iron Range region of Minnesota → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Laurentia → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Fennoscandian Shield → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

New England Upland → geologicAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Grampian Group → geologicalPeriod → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Black Mountains → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Sahyadri → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Magaliesberg → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Hadean Eon → partOf → Precambrian Supereon ⓘ

Cryptozoic → alsoKnownAs → Precambrian Supereon ⓘ

Cryptozoic → timeScaleContext → Precambrian Supereon ⓘ

this entity surface form: Precambrian time

Cryptozoic → supersededBy → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Snowball Earth glaciations → temporalLocation → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Charnwood Forest, England → geologicalPeriod → Precambrian Supereon ⓘ

subject surface form: Charnwood Forest

this entity surface form: Precambrian

West African Craton → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Siberian Craton → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Inaria → geologicalContext → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Kalahari Craton → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Amazonia → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Australia craton (in many models) → formedIn → Precambrian Supereon ⓘ

this entity surface form: Precambrian Eon

Statherian Period → usedIn → Precambrian Supereon ⓘ

this entity surface form: Precambrian stratigraphy

Ectasian Period → fallsWithin → Precambrian Supereon ⓘ

Ectasian Period → supereon → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Stenian Period → fallsWithin → Precambrian Supereon ⓘ

Mesoarchean Era → usedIn → Precambrian Supereon ⓘ

this entity surface form: Precambrian time scale

Orosirian Period → partOf → Precambrian Supereon ⓘ

Huronian glaciation → researchField → Precambrian Supereon ⓘ

this entity surface form: Precambrian geology

Neoarchean Era → timeScaleType → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Menominee Iron Range → geologicEra → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Mount Owen → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Armorican Massif → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Guiana Highlands → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Eumetazoa → fossilRecord → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Teewinot Mountain → geologicAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian

Franklin Mountains → geologicalAge → Precambrian Supereon ⓘ

this entity surface form: Precambrian