Tumblagooda Sandstone
| Tumblagooda Sandstone | |
|---|---|
| Stratigraphic range: Ordovician-Silurian | |
| Type | Geological formation |
| Unit of | Carnarvon & Perth Basins |
| Overlies | Proterozoic basement |
| Thickness | 1,300–3,500 m (4,300–11,500 ft) |
| Lithology | |
| Primary | Sandstone |
| Location | |
| Coordinates | 27°42′S 114°06′E / 27.7°S 114.1°E |
| Region | Western Australia |
| Country | Australia |
| Extent | Carnarvon Basin |
| Type section | |
| Named for | Tumblagooda |
The Tumblagooda Sandstone is a geological formation deposited during the Silurian or Ordovician periods, between four and five hundred million years ago, and is now exposed on the west coast of Australia in river and coastal gorges near the tourist town of Kalbarri, Kalbarri National Park and the Murchison River gorge, straddling the boundary of the Carnarvon and Perth basins. Visible trackways are interpreted by some to be the earliest evidence of fully terrestrial animals.