Ectasian Period
E232460
The Ectasian Period is a division of the Mesoproterozoic characterized by widespread stabilization of continental crust and the continued development of early eukaryotic life.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ectasian Period canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T2087568 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Ectasian Period Context triple: [Mesoproterozoic Era, contains, Ectasian Period]
-
A.
Orosirian Period
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.
-
B.
Archaic period
The Archaic period in Aridoamerica was a long prehistoric era marked by hunter-gatherer societies adapting to arid environments through intensive plant use, early cultivation, and increasingly complex social organization.
-
C.
Statherian Period
The Statherian Period is the final division of the Paleoproterozoic Era, marked by the stabilization of continental cratons and significant crustal growth roughly 1.8 to 1.6 billion years ago.
-
D.
Amoraic period
The Amoraic period was the era in Jewish history (roughly 3rd–5th centuries CE) during which rabbinic sages known as Amoraim developed and interpreted the Mishnah, producing the Talmud and shaping classical Rabbinic Judaism.
-
E.
Tannaitic period
The Tannaitic period was the early era of Rabbinic Judaism, roughly from the 1st to early 3rd centuries CE, during which the Mishnah and related foundational rabbinic teachings were developed and compiled.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Ectasian Period Target entity description: The Ectasian Period is a division of the Mesoproterozoic characterized by widespread stabilization of continental crust and the continued development of early eukaryotic life.
-
A.
Orosirian Period
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.
-
B.
Archaic period
The Archaic period in Aridoamerica was a long prehistoric era marked by hunter-gatherer societies adapting to arid environments through intensive plant use, early cultivation, and increasingly complex social organization.
-
C.
Statherian Period
The Statherian Period is the final division of the Paleoproterozoic Era, marked by the stabilization of continental cratons and significant crustal growth roughly 1.8 to 1.6 billion years ago.
-
D.
Amoraic period
The Amoraic period was the era in Jewish history (roughly 3rd–5th centuries CE) during which rabbinic sages known as Amoraim developed and interpreted the Mishnah, producing the Talmud and shaping classical Rabbinic Judaism.
-
E.
Tannaitic period
The Tannaitic period was the early era of Rabbinic Judaism, roughly from the 1st to early 3rd centuries CE, during which the Mishnah and related foundational rabbinic teachings were developed and compiled.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
chronostratigraphic unit
ⓘ
geologic period ⓘ |
| associatedWith |
development of passive continental margins
ⓘ
expansion of shallow marine environments ⓘ growth and stabilization of continental cratons ⓘ |
| biologicalSignificance |
appearance of more complex microfossil assemblages
ⓘ
diversification of early eukaryotes ⓘ |
| characterizedBy |
continued development of early eukaryotic life
ⓘ
extensive platform cover sequences ⓘ stabilization of continental crust ⓘ widespread sedimentary basin development ⓘ |
| chronologicalPosition | second period of the Mesoproterozoic Era ⓘ |
| endTime | 1200 million years ago ⓘ |
| eon | Proterozoic Eon ⓘ |
| era | Mesoproterozoic Era ⓘ |
| fallsWithin |
Mesoproterozoic Era
ⓘ
surface form:
Middle Proterozoic
Precambrian Supereon ⓘ |
| followedBy | Stenian Period ⓘ |
| follows | Calymmian Period ⓘ |
| geochronologicalRank | period ⓘ |
| globalContext | part of long interval before the Neoproterozoic glaciations ⓘ |
| lithologicalAssociation |
platform carbonates
ⓘ
shallow-marine siliciclastic sequences ⓘ |
| lowerBoundaryDefinedBy | age of 1400 Ma ⓘ |
| namedAfter | Greek word "ektasis" (extension) ⓘ |
| partOf |
Mesoproterozoic Era
ⓘ
Proterozoic Eon ⓘ |
| precededBy | Calymmian Period ⓘ |
| startTime | 1400 million years ago ⓘ |
| stratigraphicStatus | formal unit in the Proterozoic timescale ⓘ |
| succeededBy | Stenian Period ⓘ |
| supereon |
Precambrian Supereon
ⓘ
surface form:
Precambrian
|
| tectonicSetting | relative tectonic quiescence compared to earlier Proterozoic ⓘ |
| temporalRelation |
Rhyacian Period
ⓘ
surface form:
older than Stenian Period
Rhyacian Period ⓘ
surface form:
younger than Calymmian Period
|
| timeSpan | approximately 200 million years ⓘ |
| upperBoundaryDefinedBy | age of 1200 Ma ⓘ |
| usedFor | correlation of Mesoproterozoic rock units worldwide ⓘ |
| usedIn |
International Chronostratigraphic Chart
ⓘ
surface form:
International Commission on Stratigraphy timescale
|
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: Ectasian Period Description of subject: The Ectasian Period is a division of the Mesoproterozoic characterized by widespread stabilization of continental crust and the continued development of early eukaryotic life.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.