Mesoproterozoic Era

E45387

geologic era subdivision of the Proterozoic Eon

The Mesoproterozoic Era was a middle division of Earth's Proterozoic Eon characterized by the stabilization of continental cratons, widespread sedimentary basin development, and significant evolutionary advances in eukaryotic life.

Try in SPARQL Jump to: Surface forms Statements Referenced by

All labels observed (2)

Label	Occurrences
Mesoproterozoic Era canonical	11
Middle Proterozoic	1

Statements (46)

Predicate	Object
instanceOf	geologic era ⓘ subdivision of the Proterozoic Eon ⓘ
associatedWith	Grenville orogeny ⓘ continental collision events ⓘ growth of continental crust ⓘ
atmosphericCondition	oxygen levels lower than modern atmosphere ⓘ relatively stable oxygen levels compared to Paleoproterozoic ⓘ
biologicalSignificance	appearance of complex multicellular eukaryotes ⓘ development of more complex protistan ecosystems ⓘ diversification of eukaryotes ⓘ expansion of photosynthetic eukaryotic algae ⓘ
characterizedBy	assembly of the supercontinent Rodinia ⓘ evolutionary advances in eukaryotic life ⓘ extensive platform cover sediments ⓘ large passive continental margins ⓘ rifting and breakup of earlier supercratons ⓘ stabilization of continental cratons ⓘ widespread sedimentary basin development ⓘ
chronostratigraphicUnit	Erathem ⓘ
climate	absence of global-scale Snowball Earth glaciations ⓘ generally warm climate ⓘ
contains	Calymmian Period ⓘ Ectasian Period ⓘ Stenian Period ⓘ
definedBy	absolute age boundaries at 1600 Ma and 1000 Ma ⓘ
duration	approximately 600 million years ⓘ
economicSignificance	deposition of important sediment-hosted mineral deposits ⓘ formation of some large iron and base metal deposits ⓘ
end	1000 million years ago ⓘ
followedBy	Neoproterozoic Era ⓘ
follows	Paleoproterozoic Era ⓘ
geochronologicRank	era ⓘ
notableEvent	early stages of Rodinia supercontinent assembly ⓘ onset and development of the Grenville orogenic cycle ⓘ stabilization of many shield areas ⓘ
paleogeography	development of large shallow epicontinental seas ⓘ dominance of stable cratonic blocks ⓘ
partOf	Proterozoic Eon ⓘ
positionInPrecambrian	middle era of the Proterozoic Eon ⓘ part of the Precambrian Supereon ⓘ
precededBy	Great Oxidation Event ⓘ
sedimentaryRecord	abundant stromatolitic carbonates ⓘ extensive siliciclastic successions ⓘ large, long-lived basins ⓘ
start	1600 million years ago ⓘ
timeScaleStandard	International Commission on Stratigraphy ⓘ

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: Mesoproterozoic Era
Description of subject: The Mesoproterozoic Era was a middle division of Earth's Proterozoic Eon characterized by the stabilization of continental cratons, widespread sedimentary basin development, and significant evolutionary advances in eukaryotic life.

Referenced by (12)

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

Proterozoic Eon → subdivision → Mesoproterozoic Era ⓘ

Precambrian Supereon → contains → Mesoproterozoic Era ⓘ

Paleoproterozoic Era → precedes → Mesoproterozoic Era ⓘ

Neoproterozoic Era → follows → Mesoproterozoic Era ⓘ

Grenville orogeny → geologicEra → Mesoproterozoic Era ⓘ

Calymmian Period → partOf → Mesoproterozoic Era ⓘ

Calymmian Period → geologicEra → Mesoproterozoic Era ⓘ

Ectasian Period → partOf → Mesoproterozoic Era ⓘ

Ectasian Period → fallsWithin → Mesoproterozoic Era ⓘ

this entity surface form: Middle Proterozoic

Ectasian Period → era → Mesoproterozoic Era ⓘ

Stenian Period → partOf → Mesoproterozoic Era ⓘ

Stenian Period → geologicEra → Mesoproterozoic Era ⓘ