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| Newport Formation Stratigraphic range: Mid-Triassic | |
|---|---|
| Type | Geological formation |
| Unit of | Narrabeen Group |
| Thickness | up to 49 metres (160 ft) |
| Location | |
| Location | Sydney Basin |
| Country | Australia |
The Newport Formation is a geologic formation outcropping in the Sydney Basin in eastern Australia . This stratum is up to 49 metres thick. Formed in the mid-Triassic, it is part of the Narrabeen Group of sedimentary rocks.[1][2]