Erathem
E232458
An erathem is a formal chronostratigraphic unit representing the rock layers deposited during a corresponding geologic era in Earth’s history.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Erathem canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2087566 — 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: Erathem Context triple: [Mesoproterozoic Era, chronostratigraphicUnit, Erathem]
-
A.
Tynaarlo
Tynaarlo is a municipality in the northeastern Netherlands known for its rural character and location between the cities of Groningen and Assen.
-
B.
Terrigal
Terrigal is a popular coastal town in New South Wales, Australia, known for its surf beaches, scenic headlands, and vibrant holiday atmosphere.
-
C.
Ehle
Ehle is the surname of Jennifer Ehle, an acclaimed Anglo-American actress known for her work in film, television, and theatre.
-
D.
Mauregard
Mauregard is a small commune in the Seine-et-Marne department of the Île-de-France region in north-central France, situated near Paris Charles de Gaulle Airport.
-
E.
Thebae
Thebae is the Latin name for the ancient Egyptian city of Thebes, a major religious and political center on the Nile known for its temples and royal necropolis.
- 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: Erathem Target entity description: An erathem is a formal chronostratigraphic unit representing the rock layers deposited during a corresponding geologic era in Earth’s history.
-
A.
Tynaarlo
Tynaarlo is a municipality in the northeastern Netherlands known for its rural character and location between the cities of Groningen and Assen.
-
B.
Terrigal
Terrigal is a popular coastal town in New South Wales, Australia, known for its surf beaches, scenic headlands, and vibrant holiday atmosphere.
-
C.
Ehle
Ehle is the surname of Jennifer Ehle, an acclaimed Anglo-American actress known for her work in film, television, and theatre.
-
D.
Mauregard
Mauregard is a small commune in the Seine-et-Marne department of the Île-de-France region in north-central France, situated near Paris Charles de Gaulle Airport.
-
E.
Thebae
Thebae is the Latin name for the ancient Egyptian city of Thebes, a major religious and political center on the Nile known for its temples and royal necropolis.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
chronostratigraphic unit
ⓘ
geologic time unit ⓘ |
| appliesTo | rock record ⓘ |
| correspondsTo | geologic era ⓘ |
| definedAs | the body of rock formed during a specific geologic era ⓘ |
| definedBy |
Global Boundary Stratotype Section and Point
ⓘ
stratigraphic boundaries ⓘ |
| distinguishedFrom |
era
ⓘ
series ⓘ stage ⓘ system ⓘ |
| etymology | derived from "era" and "-them" (body of rock) ⓘ |
| formalStatus | formal unit ⓘ |
| governedBy |
International Commission on Stratigraphy
ⓘ
International Union of Geological Sciences ⓘ |
| hasExample |
Archean erathem
ⓘ
Cenozoic erathem ⓘ Hadean erathem ⓘ
linked to:
Hadean Eon
Mesozoic erathem ⓘ
linked to:
Mesozoic Era
Paleozoic erathem ⓘ Proterozoic erathem ⓘ
linked to:
Proterozoic Eon
|
| languageOfTerm | English ⓘ |
| partOf | chronostratigraphy ⓘ |
| rank | large-scale chronostratigraphic unit ⓘ |
| relatedConcept |
chronostratigraphic chart
ⓘ
geologic time scale ⓘ |
| represents | rocks deposited during a geologic era ⓘ |
| representsDurationOf | tens to hundreds of millions of years ⓘ |
| scope | global ⓘ |
| subdividesInto |
system
ⓘ
systems ⓘ |
| subunitOf |
eonothem
ⓘ
eonothems ⓘ |
| superunitOf |
series
ⓘ
stage ⓘ system ⓘ systems ⓘ |
| symbolizedIn | international chronostratigraphic charts ⓘ |
| timeEquivalent | era ⓘ |
| usedFor |
correlation of rock units
ⓘ
global stratigraphic classification ⓘ |
| usedIn |
Earth sciences
ⓘ
geology ⓘ |
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: Erathem Description of subject: An erathem is a formal chronostratigraphic unit representing the rock layers deposited during a corresponding geologic era in Earth’s history.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.