File:Greenlandite_(fuchsite-quartz_gneiss),_Greenland.jpg · Wikimedia Commons · See Wikimedia Commons
سپیدهدم نخستزیستی
Sign in to saveAlso known as Eoarchaean, Eoarchean Era, Eoarchaean Era
thumb|Eoarchaean (3.8 b.y.) Greenlandite specimen (fuchsite-quartz gneiss), Nuup Kangerlua, Greenland. thumb|Garnet paragneiss, Nuvvuagittuq Greenstone Belt, Canada. 4.28 Ga old: the oldest known Earth rock of which direct samples are available. The Eoarchean ( ; also spelled Eoarchaean) is the first era of the Archean Eon of the geologic record. It spans 431 million years, from the end of the Hadean Eon 4031 Mya to the start of the Paleoarchean Era 3600 Mya. Some estimates place the beginnings of life on Earth in this era, while others place it earlier. Evidence of archaea and cyanobacteri
Key facts
- Geologic timespan.color
- Eoarchean
- Geologic timespan.top_bar
- all time
- Geologic timespan.time_start_uncertainty
- 3
- Geologic timespan.timeline
- Eons
- Geologic timespan.name_formality
- Formal
- Geologic timespan.alternate_spellings
- Eoarchaean
- Geologic timespan.celestial_body
- earth
- Geologic timespan.usage
- Global (ICS)
- Geologic timespan.timescales_used
- ICS Time Scale
- Geologic timespan.chrono_unit
- Era
- Geologic timespan.strat_unit
- Erathem
- Geologic timespan.timespan_formality
- Formal
- Geologic timespan.lower_boundary_def
- Ten oldest U-Pb zircon ages
- Geologic timespan.upper_boundary_def
- Defined Chronometrically
- Geologic timespan.lower_gssa_location
- Along the Acasta River, Northwest Territories, Canada
via Wikipedia infobox
Wikidata facts
- Instance of
- erathem
- Followed by
- Paleoarchean
Show 4 more facts
- Commons category
- Eoarchean
- sRGB color hex triplet
- DA037F
- start time
- 4031000000
- end time
- 3600000000
Sources (2)
via Wikidata · CC0
Gallery (6)
On the map
3 mapped locations