Statements (24)
| 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: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 early oceans formation of Earth's first stable continental crusts development of stromatolites |
| gptkbp:partOf |
gptkb:Precambrian_supereon
|
| gptkbp:precededBy |
gptkb:Hadean_eon
|
| gptkbp:startDate |
about 4 billion years ago
|
| gptkbp:supercontinents |
gptkb:Ur
gptkb:Vaalbara |
| gptkbp:tectonicActivity |
high
|
| gptkbp:bfsParent |
gptkb:Precambrian_supereon
gptkb:Precambrian_period |
| gptkbp:bfsLayer |
6
|