Warrawoona Group
The Warrawoona Group is a geological unit in Western Australia containing putative fossils of cyanobacteria cells. Dated 3.465 Ga, these microstructures, found in Archean chert, are considered to be the oldest known geological record of life on Earth.
| Warrawoona Group | |
|---|---|
| Stratigraphic range: Paleoarchean ~ | |
Warrawoona and Western Australia showing geological classification | |
| Type | Geological group |
| Unit of | Pilbara Supergroup |
| Lithology | |
| Primary | Chert |
| Other | Archean felsic volcanic rocks |
| Location | |
| Coordinates | 21°42′S 118°0′E |
| Region | Western Australia |
| Country | Australia |
| Extent | Pilbara craton |
| Type section | |
| Named for | Warrawoona |
| Named by | Arthur Hugh Hickman |
| Year defined | 1983 |
Warrawoona Group (Australia) Warrawoona Group (Western Australia) | |
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