Statements (25)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
geological eon
|
| gptkbp:atmosphere |
lacked free oxygen
|
| gptkbp:contains |
gptkb:Eoarchean_Era
gptkb:Mesoarchean_Era gptkb:Neoarchean_Era gptkb:Paleoarchean_Era |
| gptkbp:duration |
about 1.5 billion years
|
| gptkbp:endDate |
about 2.5 billion years ago
|
| gptkbp:followedBy |
gptkb:Proterozoic_Eon
|
| https://www.w3.org/2000/01/rdf-schema#label |
Archean Eon
|
| gptkbp:lifeForm |
gptkb:Bacteria
prokaryotes |
| gptkbp:notableFor |
emergence of life
formation of stromatolites formation of Earth's first stable continental crusts |
| gptkbp:partOf |
gptkb:Precambrian_Supereon
|
| gptkbp:precededBy |
gptkb:Hadean_Eon
|
| gptkbp:significantEvent |
beginning of plate tectonics
formation of banded iron formations formation of greenstone belts |
| gptkbp:startDate |
about 4 billion years ago
|
| gptkbp:bfsParent |
gptkb:Eon
gptkb:Precambrian gptkb:Bacteria |
| gptkbp:bfsLayer |
5
|