T-OAE
E727678
T-OAE is a major Early Jurassic global oceanic anoxic event marked by widespread marine oxygen depletion, carbon cycle disruption, and significant biotic turnover.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
climatic perturbation
ⓘ
oceanic anoxic event ⓘ |
| abbreviationOf | Toarcian Oceanic Anoxic Event NERFINISHED ⓘ |
| affects |
global oceans
ⓘ
marine ecosystems ⓘ |
| approximateAgeMa | 183 ⓘ |
| associatedWith |
black shale deposition
ⓘ
carbon cycle instability ⓘ changes in seawater chemistry ⓘ enhanced greenhouse conditions ⓘ expanded oxygen minimum zones ⓘ extinction of ammonites ⓘ extinction of benthic invertebrates ⓘ extinction of brachiopods ⓘ global warming ⓘ increased weathering rates ⓘ mass extinction of marine taxa ⓘ nutrient enrichment of oceans ⓘ ocean acidification ⓘ turnover in marine plankton ⓘ |
| characterizedBy |
enhanced organic carbon burial
ⓘ
global carbon cycle disruption ⓘ negative carbon isotope excursion ⓘ significant biotic turnover ⓘ widespread marine oxygen depletion ⓘ |
| consequence |
collapse of some marine food webs
ⓘ
long-term changes in carbon reservoirs ⓘ restructuring of marine biodiversity ⓘ |
| duration | hundreds of thousands of years ⓘ |
| fullName | Toarcian Oceanic Anoxic Event NERFINISHED ⓘ |
| geologicTimePosition | early Toarcian ⓘ |
| hasEvidenceIn |
carbon isotope records
ⓘ
marine stratigraphic sections ⓘ organic-rich sedimentary rocks ⓘ paleontological records ⓘ |
| linkedTo |
Karoo-Ferrar large igneous province
NERFINISHED
ⓘ
large igneous province volcanism ⓘ |
| occursIn |
Early Jurassic
NERFINISHED
ⓘ
Toarcian Age NERFINISHED ⓘ |
| recordedIn |
European epicontinental seas
ⓘ
Panthalassa Ocean margins ⓘ Tethys Ocean margins ⓘ |
| triggerHypothesis |
climate warming-induced stratification
ⓘ
massive volcanic CO2 emissions ⓘ methane release from marine sediments ⓘ |
| usedAs |
chemostratigraphic marker
ⓘ
paleoenvironmental analog for modern deoxygenation ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.