Meghalayan Age
E429406
Meghalayan Age is the most recent and current age of the Holocene Epoch, defined by a global climatic event that began about 4,200 years ago and significantly affected human civilizations.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Meghalayan Age canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4303672 — 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: Meghalayan Age Context triple: [Meghalayan, formalName, Meghalayan Age]
-
A.
Rhyacian Period
The Rhyacian Period is a geologic time interval in the early Proterozoic characterized by significant crustal growth, widespread metamorphism, and some of the earliest known large-scale glaciations.
-
B.
Pridoli Epoch
The Pridoli Epoch is the final epoch of the Silurian Period, marking a transitional interval in Earth’s history just before the onset of the Devonian.
-
C.
Calymmian Period
The Calymmian Period is the earliest division of the Mesoproterozoic Era, marked by the stabilization and expansion of continental crust and the development of large sedimentary basins roughly 1.6 to 1.4 billion years ago.
-
D.
Cisuralian Epoch
The Cisuralian Epoch is the earliest subdivision of the Permian, marking a time of significant diversification of terrestrial life and continued development of early amniotes following the late Paleozoic ice age.
-
E.
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.
- 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: Meghalayan Age Target entity description: Meghalayan Age is the most recent and current age of the Holocene Epoch, defined by a global climatic event that began about 4,200 years ago and significantly affected human civilizations.
-
A.
Rhyacian Period
The Rhyacian Period is a geologic time interval in the early Proterozoic characterized by significant crustal growth, widespread metamorphism, and some of the earliest known large-scale glaciations.
-
B.
Pridoli Epoch
The Pridoli Epoch is the final epoch of the Silurian Period, marking a transitional interval in Earth’s history just before the onset of the Devonian.
-
C.
Calymmian Period
The Calymmian Period is the earliest division of the Mesoproterozoic Era, marked by the stabilization and expansion of continental crust and the development of large sedimentary basins roughly 1.6 to 1.4 billion years ago.
-
D.
Cisuralian Epoch
The Cisuralian Epoch is the earliest subdivision of the Permian, marking a time of significant diversification of terrestrial life and continued development of early amniotes following the late Paleozoic ice age.
-
E.
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.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
chronostratigraphic unit
ⓘ
geologic age ⓘ |
| boundaryDefinedBy |
geochemical signal in Mawmluh Cave stalagmites
ⓘ
stable oxygen isotope shift in speleothems ⓘ |
| characterizedBy |
global cooling
ⓘ
major changes in monsoon patterns ⓘ significant impacts on human civilizations ⓘ widespread aridification ⓘ |
| climateContext | Late Holocene climate variability ⓘ |
| correlatesWith | 4.2 ka BP event in many regional climate records ⓘ |
| definedBy | International Commission on Stratigraphy NERFINISHED ⓘ |
| definedByEvent |
4.2 kiloyear climatic event
ⓘ
abrupt global drought event ⓘ |
| endTime | present ⓘ |
| follows | Northgrippian Age NERFINISHED ⓘ |
| geologicTimeScalePosition | youngest formally defined age of the Phanerozoic Eon ⓘ |
| GSSPLocation |
Mawmluh Cave
NERFINISHED
ⓘ
Mawmluh Cave, Meghalaya, India NERFINISHED ⓘ |
| GSSPType | speleothem record ⓘ |
| hasAbbreviation | Meghalayan NERFINISHED ⓘ |
| impactOn |
Indus Valley Civilization
NERFINISHED
ⓘ
ancient Egyptian Old Kingdom ⓘ ancient Near Eastern civilizations ⓘ civilizations in the eastern Mediterranean ⓘ |
| isPartOf |
Cenozoic Era
NERFINISHED
ⓘ
Phanerozoic Eon NERFINISHED ⓘ Quaternary Period NERFINISHED ⓘ |
| languageOfName | English ⓘ |
| namedAfter |
Meghalaya
NERFINISHED
ⓘ
Meghalaya state in India NERFINISHED ⓘ |
| partOf | Holocene Epoch NERFINISHED ⓘ |
| precededBy | Northgrippian Age NERFINISHED ⓘ |
| rank | uppermost age of the Holocene ⓘ |
| ratificationYear | 2018 ⓘ |
| ratifiedBy | International Union of Geological Sciences NERFINISHED ⓘ |
| relatedConcept | Anthropocene (proposed epoch) NERFINISHED ⓘ |
| startTime |
approximately 2250 BCE
ⓘ
approximately 4,200 years before present ⓘ |
| status | current official upper subdivision of the Holocene Epoch ⓘ |
| stratotypeSection | Mawmluh Cave speleothem sequence NERFINISHED ⓘ |
| subdivisionOf | Late Holocene ⓘ |
| timeScale | International Chronostratigraphic Chart NERFINISHED ⓘ |
| usedInDiscipline |
Quaternary science
NERFINISHED
ⓘ
paleoclimatology ⓘ 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: Meghalayan Age Description of subject: Meghalayan Age is the most recent and current age of the Holocene Epoch, defined by a global climatic event that began about 4,200 years ago and significantly affected human civilizations.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.