Huronian glaciation

E226916

The Huronian glaciation was one of Earth's earliest and longest ice ages, occurring over 2.4 billion years ago and likely linked to the Great Oxidation Event and major climatic shifts.

All labels observed (2)

Label Occurrences
Huronian glaciation canonical 2
Makganyene glaciation 1

How this entity was disambiguated

Statements (50)

Predicate Object
instanceOf glaciation
ice age
paleoclimatic event
associatedWith Great Oxidation Event
massive climatic shifts
possible global glaciation episodes
rise of oxygenic photosynthesis
causeHypothesis linked to changes in volcanic outgassing
linked to continental growth and weathering
linked to decline in atmospheric methane
linked to increase in atmospheric oxygen
linked to reduction in greenhouse effect
linked to the Great Oxidation Event
chronostratigraphicPosition after deposition of late Archean greenstone belts
early Paleoproterozoic
climaticImpact expansion of continental ice sheets
long-term global cooling
lowering of sea level
possible snowball Earth conditions
duration about 300 million years
endTime approximately 2.1 billion years ago
evidenceFoundIn Gowganda Formation
Huronian Supergroup sedimentary rocks
evidenceType dropstones
glacial diamictites
striated pavements
varved sediments
geologicalEon Paleoproterozoic Era
surface form: Paleoproterozoic Eon
geologicalEra Paleoproterozoic Era
hasUncertainty exact duration is uncertain
global extent is debated
number of distinct glacial pulses is debated
location present-day Canadian Shield
present-day Ontario, Canada
namedAfter Huronian Supergroup
Lake Huron
partOf Paleoproterozoic glaciations
relatedProcess drawdown of atmospheric CO2
enhanced silicate weathering
oxidation of reduced gases in the atmosphere
researchField Earth system science
Precambrian Supereon
surface form: Precambrian geology

paleoclimatology
significance linked to long-term habitability changes
major transition in Earth’s surface environment
one of Earth’s earliest known ice ages
one of Earth’s longest known ice ages
startTime approximately 2.4 billion years ago
temporalRelation followed the Archean Eon
preceded later Proterozoic glaciations

How these facts were elicited

Referenced by (3)

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

Paleoproterozoic Era containsEvent Huronian glaciation
Rhyacian Period hasMajorEvent Huronian glaciation
Rhyacian Period hasMajorEvent Huronian glaciation
this entity surface form: Makganyene glaciation