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 Marinoan glaciation
surface form: Elatina 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 glaciations
surface form: 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 Era
surface form: Neoproterozoic geology

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

South Australia
Svalbard
namedAfter Marino, South Australia
partOf Snowball Earth glaciations
surface form: Cryogenian glaciations

Snowball Earth glaciations
surface form: Neoproterozoic Snowball Earth episodes
precededBy Sturtian glaciation
precedes Ediacaran Period
relatedConcept Ediacaran biota
Snowball Earth glaciations
surface form: 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 Cryogenian Period
surface form: late 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 Marinoan glaciation
this entity surface form: Elatina glaciation
Gaskiers glaciation precededBy Marinoan glaciation