Marinoan glaciation

E231931

The Marinoan glaciation was a major Neoproterozoic ice age, likely a global or near-global “Snowball Earth” event that occurred around 650–635 million years ago.

All labels observed (2)

Label Occurrences
Marinoan glaciation canonical 4
Elatina glaciation 1

How this entity was disambiguated

Statements (48)

Predicate Object
instanceOf Neoproterozoic ice age
Snowball Earth event
glaciation event
alsoKnownAs Elatina glaciation
linked to: Marinoan glaciation
associatedWith changes in ocean chemistry
large negative carbon isotope excursions
perturbations of the global carbon cycle
rise in atmospheric oxygen levels (hypothesized)
causedBy continental configuration favoring ice growth (hypothesized)
long-term drawdown of atmospheric CO₂ (hypothesized)
characterizedBy extensive continental ice sheets
low-latitude glaciation
climateExtent global or near-global
climateModel Snowball Earth hypothesis
duration on the order of several million years
endMarkedBy deposition of cap carbonates
endTime approximately 635 million years ago
evidenceFrom cap carbonates
dropstones in marine sediments
glacial diamictites
paleomagnetic data indicating low-latitude ice
fieldOfStudy Neoproterozoic geology
linked to: Neoproterozoic Era

paleoclimatology
stratigraphy
followedBy Ediacaran Period
follows Sturtian glaciation
geologicalAge late Cryogenian, ca. 650–635 Ma
geologicalPeriod Neoproterozoic
linked to: Neoproterozoic Era
impactOn subsequent Ediacaran biotic diversification (hypothesized)
locationEvidence Canada
China
Namibia
Northwest Canada
linked to: Northern Canada

South Australia
Svalbard
namedAfter Marino, South Australia
partOf Cryogenian glaciations
Neoproterozoic Snowball Earth episodes
precededBy Sturtian glaciation
precedes Ediacaran Period
relatedConcept Ediacaran biota
Snowball Earth
Sturtian glaciation
significance key constraint on Cryogenian–Ediacaran boundary
one of the most severe ice ages in Earth history
startTime approximately 650 million years ago
terminationMechanism accumulation of volcanic CO₂ leading to greenhouse warming (hypothesized)
timeSpan late Cryogenian Period
linked to: Cryogenian Period

How these facts were elicited

Referenced by (5)

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

Neoproterozoic Era includesEvent Marinoan glaciation
Snowball Earth glaciations hasPart Marinoan glaciation
Sturtian glaciation followedBy Marinoan glaciation
Marinoan glaciation alsoKnownAs Elatina glaciation
linked to: Marinoan glaciation
Gaskiers glaciation precededBy Marinoan glaciation