usedAsChronostratigraphicMarkerFor

P77985
predicate

Indicates that something serves as a reference point or marker for defining or correlating geological time intervals in a chronostratigraphic framework.

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All labels observed (14)

Label Occurrences
biozonationBasedOn 6
chronostratigraphicSignificance 3
biostratigraphyMarker 2

Description generation (PDg)

The one-sentence description above was generated by prompting gpt-5.1 with the predicate name and this instruction.

Instruction
Given a predicate that represents a relationship or action between entities, generate a one-sentence description explaining its meaning.  
# Instructions
Focus on describing the relationship, not the entities themselves. 
# Response Format
Begin the description with \' Indicates...\'
Input
Predicate: usedAsChronostratigraphicMarkerFor
Generated description
Indicates that something serves as a reference point or marker for defining or correlating geological time intervals in a chronostratigraphic framework.

Sample triples (24)

Subject Object
Gauss–Matuyama geomagnetic reversal Quaternary onset ⓘ
Pliensbachian ammonite assemblages via predicate surface "biozonationBasedOn" ⓘ
Meishan section
linked to: Meishan section China for base of Triassic
approximately 252 million years ago via predicate surface "geologicalAgeMarked" ⓘ
Triassic–Jurassic extinction event Triassic–Jurassic boundary GSSP via predicate surface "stratigraphicMarker" ⓘ
linked to: Global Boundary Stratotype Section and Point for base of Hettangian
Wuchiapingian conodont biostratigraphy via predicate surface "biozonationBasedOn" ⓘ
Wuchiapingian ammonoid biostratigraphy via predicate surface "biozonationBasedOn" ⓘ
Middle Ordovician graptolite zones via predicate surface "biostratigraphyMarker" ⓘ
Middle Ordovician conodont zones via predicate surface "biostratigraphyMarker" ⓘ
Furongian defined by trilobite and conodont zones via predicate surface "biozonation" ⓘ
Hangenberg black shales marker horizon for the Hangenberg event via predicate surface "chronostratigraphicRole" ⓘ
Hangenberg black shales used for interbasinal correlation of the Devonian–Carboniferous boundary via predicate surface "chronostratigraphicRole" ⓘ
Mawmluh Cave
linked to: Mawmluh Cave, Meghalaya, India
4.2 kiloyear climatic event via predicate surface "GSSPEventRepresented" ⓘ
Eratosthenes (lunar crater) start of Eratosthenian period via predicate surface "usedAsStratigraphicMarkerFor" ⓘ
Klonk Section Monograptus uniformis via predicate surface "primaryMarkerFossil" NERFINISHED ⓘ
Klonk Section Monograptus uniformis uniformis via predicate surface "primaryMarkerFossil" NERFINISHED ⓘ
Davoei Zone relative dating of Pliensbachian strata via predicate surface "biochronologicUse" ⓘ
Middle Triassic
linked to: Middle Tr.
first appearance of specific ammonoid and conodont index fossils via predicate surface "stratigraphicBoundariesDefinedBy" ⓘ
Wenlock Epoch graptolite biozones via predicate surface "biozonationBasedOn" ⓘ
Wenlock Epoch conodont biozones via predicate surface "biozonationBasedOn" ⓘ
Wenlock Epoch brachiopod assemblage zones via predicate surface "biozonationBasedOn" ⓘ
Gaskiers Formation marks a major Neoproterozoic glacial episode via predicate surface "chronostratigraphicSignificance" ⓘ
Bathonian subdivided into several standard ammonite zones via predicate surface "ammoniteBiozonation" ⓘ
Ischigualasto Formation records early diversification of dinosaurs via predicate surface "chronostratigraphicSignificance" ⓘ
Ischigualasto Formation key reference for Late Triassic terrestrial faunas via predicate surface "chronostratigraphicSignificance" ⓘ