Hirnantian glaciation
E1208418
UNEXPLORED
The Hirnantian glaciation was a major Late Ordovician ice age marked by extensive continental ice sheets and global cooling that played a key role in driving one of Earth’s largest mass extinction events.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Hirnantian glaciation canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T16370855 — 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: Hirnantian glaciation Context triple: [Late Ordovician mass extinction, associatedWith, Hirnantian glaciation]
-
A.
Sturtian glaciation
The Sturtian glaciation was a major global ice age during the Neoproterozoic, when extensive ice sheets may have covered much of Earth’s surface in one of the most severe glacial events in the planet’s history.
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B.
Marinoan glaciation
The Marinoan glaciation was a major Neoproterozoic ice age, likely a global or near-global “Snowball Earth” event that occurred around 650–635 million years ago.
-
C.
Huronian glaciation
The Huronian glaciation was one of Earth's earliest and longest ice ages, occurring over 2.4 billion years ago and likely linked to the Great Oxidation Event and major climatic shifts.
-
D.
Kaigas glaciation
The Kaigas glaciation was an early Neoproterozoic ice age event in Earth's history, preceding the more extensive Sturtian glaciation and representing one of the planet's significant pre-Cryogenian glacial episodes.
-
E.
Gaskiers glaciation
Gaskiers glaciation was a brief but intense Neoproterozoic ice age, occurring around 580 million years ago, that is associated with widespread glacial deposits and may have influenced early animal evolution.
- 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: Hirnantian glaciation Target entity description: The Hirnantian glaciation was a major Late Ordovician ice age marked by extensive continental ice sheets and global cooling that played a key role in driving one of Earth’s largest mass extinction events.
-
A.
Sturtian glaciation
The Sturtian glaciation was a major global ice age during the Neoproterozoic, when extensive ice sheets may have covered much of Earth’s surface in one of the most severe glacial events in the planet’s history.
-
B.
Marinoan glaciation
The Marinoan glaciation was a major Neoproterozoic ice age, likely a global or near-global “Snowball Earth” event that occurred around 650–635 million years ago.
-
C.
Huronian glaciation
The Huronian glaciation was one of Earth's earliest and longest ice ages, occurring over 2.4 billion years ago and likely linked to the Great Oxidation Event and major climatic shifts.
-
D.
Kaigas glaciation
The Kaigas glaciation was an early Neoproterozoic ice age event in Earth's history, preceding the more extensive Sturtian glaciation and representing one of the planet's significant pre-Cryogenian glacial episodes.
-
E.
Gaskiers glaciation
Gaskiers glaciation was a brief but intense Neoproterozoic ice age, occurring around 580 million years ago, that is associated with widespread glacial deposits and may have influenced early animal evolution.
- F. None of above. chosen
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.