Global Boundary Stratotype Section and Point at Klonk, Czech Republic
E147850
The Global Boundary Stratotype Section and Point at Klonk in the Czech Republic is a formally designated geological reference site that marks the internationally agreed base of the Devonian System and serves as a key standard for correlating Early Devonian rock strata worldwide.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Global Boundary Stratotype Section and Point at Klonk, Czech Republic canonical | 1 |
| Global Boundary Stratotype Section and Point definition | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1297117 — 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: Global Boundary Stratotype Section and Point at Klonk, Czech Republic Context triple: [Early Devonian, boundaryDefinedBy, Global Boundary Stratotype Section and Point at Klonk, Czech Republic]
-
A.
International Chronostratigraphic Chart
The International Chronostratigraphic Chart is the globally recognized standard timeline used by geologists to define and correlate the divisions of Earth’s geological history.
-
B.
On the Imperfection of the Geological Record
"On the Imperfection of the Geological Record" is a chapter in Charles Darwin's *On the Origin of Species* that addresses why the fossil record is incomplete and how this affects evidence for evolutionary change.
-
C.
Eocene–Oligocene climate transition
The Eocene–Oligocene climate transition was a major global cooling event around 34 million years ago that marked the shift from a greenhouse to an icehouse Earth, including the formation of large Antarctic ice sheets.
-
D.
Solnhofen Limestone
Solnhofen Limestone is a famous Late Jurassic lithographic limestone formation in Bavaria, Germany, renowned for its exceptionally well-preserved fossils, including the iconic Archaeopteryx.
-
E.
Limits of Oceans and Seas
Limits of Oceans and Seas is an authoritative reference work that defines and standardizes the official boundaries and names of the world's oceans and seas for international use.
- 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: Global Boundary Stratotype Section and Point at Klonk, Czech Republic Target entity description: The Global Boundary Stratotype Section and Point at Klonk in the Czech Republic is a formally designated geological reference site that marks the internationally agreed base of the Devonian System and serves as a key standard for correlating Early Devonian rock strata worldwide.
-
A.
International Chronostratigraphic Chart
The International Chronostratigraphic Chart is the globally recognized standard timeline used by geologists to define and correlate the divisions of Earth’s geological history.
-
B.
On the Imperfection of the Geological Record
"On the Imperfection of the Geological Record" is a chapter in Charles Darwin's *On the Origin of Species* that addresses why the fossil record is incomplete and how this affects evidence for evolutionary change.
-
C.
Eocene–Oligocene climate transition
The Eocene–Oligocene climate transition was a major global cooling event around 34 million years ago that marked the shift from a greenhouse to an icehouse Earth, including the formation of large Antarctic ice sheets.
-
D.
Solnhofen Limestone
Solnhofen Limestone is a famous Late Jurassic lithographic limestone formation in Bavaria, Germany, renowned for its exceptionally well-preserved fossils, including the iconic Archaeopteryx.
-
E.
Limits of Oceans and Seas
Limits of Oceans and Seas is an authoritative reference work that defines and standardizes the official boundaries and names of the world's oceans and seas for international use.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
Global Boundary Stratotype Section and Point
ⓘ
geological reference section ⓘ stratotype ⓘ |
| approvedBy | International Commission on Stratigraphy ⓘ |
| correlates | Early Devonian rock successions worldwide ⓘ |
| country | Czech Republic ⓘ |
| discipline |
geology
ⓘ
stratigraphy ⓘ |
| geologicalAgeBoundary | Silurian–Devonian boundary ⓘ |
| hasGlobalSignificance | yes ⓘ |
| locatedIn | Klonk ⓘ |
| locatedInRegion | Central Europe ⓘ |
| marksBaseOf |
Devonian Period
ⓘ
surface form:
Devonian System
Lochkovian Epoch ⓘ
surface form:
Lochkovian Stage
|
| overlies | Silurian strata ⓘ |
| partOf | global network of GSSPs ⓘ |
| purpose | to provide an internationally agreed reference point for the base of the Devonian ⓘ |
| ratifiedBy | International Union of Geological Sciences ⓘ |
| referenceFor |
base of the Devonian System
ⓘ
base of the Lochkovian Stage ⓘ |
| standardType | chronostratigraphic boundary stratotype ⓘ |
| stratigraphicRole | type section for the base of the Devonian ⓘ |
| stratigraphicSystem | Devonian ⓘ |
| timeIntervalDefined |
beginning of the Devonian Period
ⓘ
beginning of the Early Devonian Epoch ⓘ |
| underlies | Devonian strata ⓘ |
| usedBy |
geologists
ⓘ
stratigraphers ⓘ |
| usedFor |
correlation of Early Devonian rock strata
ⓘ
global stratigraphic correlation ⓘ |
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: Global Boundary Stratotype Section and Point at Klonk, Czech Republic Description of subject: The Global Boundary Stratotype Section and Point at Klonk in the Czech Republic is a formally designated geological reference site that marks the internationally agreed base of the Devonian System and serves as a key standard for correlating Early Devonian rock strata worldwide.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
Early Devonian
→
boundaryDefinedBy
→
Global Boundary Stratotype Section and Point at Klonk, Czech Republic
ⓘ
International Commission on Stratigraphy
→
worksOn
→
Global Boundary Stratotype Section and Point at Klonk, Czech Republic
ⓘ
this entity surface form:
Global Boundary Stratotype Section and Point definition