Oruanui ignimbrite

E824629
ignimbrite pyroclastic flow deposit volcaniclastic formation

Oruanui ignimbrite is an extensive volcanic deposit formed from the massive pyroclastic flows of the Oruanui supereruption of New Zealand’s Taupō volcano around 26,500 years ago.

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Observed surface forms (1)

Surface form Occurrences
Oruanui 1

Statements (41)

Predicate Object
instanceOf ignimbrite ⓘ
pyroclastic flow deposit ⓘ
volcaniclastic formation ⓘ
ageConstraintMethod radiocarbon dating of associated deposits ⓘ
tephrochronology ⓘ
associatedVolcano Taupō volcano NERFINISHED ⓘ
associatedWith Oruanui caldera collapse ⓘ
chronostratigraphicUnit Late Quaternary ⓘ
composition ash ⓘ
lithic clasts ⓘ
pumice ⓘ
rhyolitic material ⓘ
country New Zealand ⓘ
depositionalEnvironment subaerial ⓘ
depositionalProcess widespread pyroclastic flows ⓘ
eruptionAge Late Pleistocene ⓘ
approximately 26,500 years ago ⓘ
eruptionMagnitude supereruption ⓘ
eruptionOf Taupō volcano NERFINISHED ⓘ
eruptionStyle Plinian to ultra-Plinian ⓘ
extent central North Island of New Zealand ⓘ
formedBy Oruanui supereruption NERFINISHED ⓘ
pyroclastic density currents ⓘ
formsPartOf Oruanui tephra sequence NERFINISHED ⓘ
hasSignificance evidence for large-scale caldera-forming eruptions at Taupō ⓘ
key marker bed in New Zealand stratigraphy ⓘ
linkedTo Oruanui eruption caldera structure beneath Lake Taupō NERFINISHED ⓘ
locatedIn North Island of New Zealand NERFINISHED ⓘ
Taupō Volcanic Zone NERFINISHED ⓘ
materialOrigin rhyolitic magma chamber beneath Taupō ⓘ
overlies pre-Oruanui volcanic deposits ⓘ
partOf Oruanui eruption NERFINISHED ⓘ
relatedHazard long-term landscape modification in central North Island ⓘ
widespread pyroclastic flow inundation ⓘ
relatedTo Oruanui Formation NERFINISHED ⓘ
studiedInDiscipline Quaternary geology ⓘ
stratigraphy ⓘ
volcanology ⓘ
tectonicSetting Taupō Rift NERFINISHED ⓘ
continental back-arc rift ⓘ
underlies younger Taupō volcanic deposits ⓘ

Referenced by (2)

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

Oruanui eruption of Taupō volcano → produced → Oruanui ignimbrite ⓘ
Taupō District → contains → Oruanui ignimbrite ⓘ
this entity surface form: Oruanui