Our Geology & Soils

The NAR contains a diverse range of topography and soils, ranging from sandy beaches, gently undulating dunes and rocky promontories of the coastal areas to the inland semi-arid areas which are characterised by stony ridges, abrupt escarpments with broad valleys separated by stony, sediment plains with shallow soils. The region has a high level of cultural heritage as well as containing areas of significant natural beauty such as the coastline and offshore islands, the Moresby Ranges and a number of dissecting rivers and estuarine systems. Other key landscape elements include Mt Lesueur, Kalbarri gorges and the coastal areas of the NAR.

Fossils

Image courtesy of the Department of Environment

Image courtesy of the Department of Environment

The NAR and Kalbarri in particular is home to many interesting fossil discoveries. The euthycarcinoid Kalbarria brimmelae discovered in the Tumbalgooda  Sandstone of the Murchison River, was one of the first animals to live on land. Fossil tracks of a giant water scorpion called Eurypterid can be seen at Kalbarri National Park’s Ross Graham Lookout. In the early 90’s a new species of pliosaurid reptile was discovered in early cretaceous birdrong sandstone of the Carnarvon Basin, near Kalbari. The three partial skeletons of small pliosaurid plesiosaurs were found with two being described as Leptocleidus clemai sp. nov. The third is indeterminate. Read the full report. Dinosaur fossils have also been found around Geraldton and Dandaragan. The fossil remains of tibia (leg bone) uncovered from the Colalura Sandstone near Geraldton was from an Ozraptor subotai. The Ozraptor was a carnivore standing about three metres tall and was alive during the Jurassic period.


Click features on the map for more information. View full page map.
Data courtesy of the Department of Agriculture and Food WA. © State of Western Australia 2014.
Click features on the map for more information. View full page map.
Data courtesy of the Geological Survey of Western Australia, Department of Mines and Petroleum. © State of Western Australia 2013

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