Rhaetian Stage

E727681

Upper Triassic stage geologic time interval

The Rhaetian Stage is the final stage of the Late Triassic period, marked by significant marine extinctions and preceding the Triassic–Jurassic boundary.

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Observed surface forms (1)

Surface form	Occurrences
Rhaetian stage	1

Statements (44)

Predicate	Object
instanceOf	Upper Triassic stage ⓘ geologic time interval ⓘ
associatedWith	changes in ammonoid assemblages ⓘ changes in conodont assemblages ⓘ changes in palynofloral assemblages ⓘ decline of many Triassic marine reptile groups ⓘ
biostratigraphicMarkers	ammonoid biozones ⓘ conodont biozones ⓘ palynological zones ⓘ
characterizedBy	faunal turnover before Triassic–Jurassic extinction ⓘ reef crises in shallow marine environments ⓘ significant marine extinctions ⓘ widespread marine regression and transgression events ⓘ
contains	continental sedimentary successions ⓘ marine sedimentary successions ⓘ
correlatesWith	upper part of Keuper in central Europe ⓘ upper part of Newark Supergroup in eastern North America ⓘ
endsWith	Triassic–Jurassic boundary NERFINISHED ⓘ
environmentalChanges	climatic instability before Jurassic ⓘ episodes of oceanic anoxia in some basins ⓘ perturbations in carbon cycle ⓘ
equivalentChron	Rhaetian Age NERFINISHED ⓘ
follows	Norian Stage NERFINISHED ⓘ middle Norian substage ⓘ
isFinalStageOf	Late Triassic NERFINISHED ⓘ Triassic Period NERFINISHED ⓘ
lowerBoundaryDefines	top of Norian Stage ⓘ
namedAfter	Rhaetian Alps NERFINISHED ⓘ
partOf	Late Triassic ⓘ Upper Triassic Series NERFINISHED ⓘ
positionInEon	Phanerozoic Eon NERFINISHED ⓘ
positionInEra	Mesozoic Era NERFINISHED ⓘ
positionInPeriod	Triassic Period NERFINISHED ⓘ
positionInSystem	Triassic System NERFINISHED ⓘ
precedes	Early Jurassic NERFINISHED ⓘ Hettangian Stage NERFINISHED ⓘ
rank	stage ⓘ
temporalRelation	immediately precedes end-Triassic mass extinction ⓘ
timeSpan	latest Triassic ⓘ
upperBoundaryDefines	Triassic–Jurassic boundary NERFINISHED ⓘ base of Hettangian Stage ⓘ base of Jurassic System ⓘ
usedBy	International Commission on Stratigraphy NERFINISHED ⓘ
usedIn	International Chronostratigraphic Chart NERFINISHED ⓘ

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

Global Boundary Stratotype Section and Point for base of Hettangian → follows → Rhaetian Stage ⓘ

Hettangian stage → follows → Rhaetian Stage ⓘ

this entity surface form: Rhaetian stage