Tag Archives: Kennedy Ranges

Our First Few Days – Kennedy Ranges to Mount Augustus

We woke with the dawn and climbed a nearby sand dune to watch the early morning light strike the escarpment of the Kennedy Range. It was rather magical.

View from the camp
Kennedy Ranges in the dawn light.

Looking the other way we could see our camp site which also looked rather magical.

Camp life
Our camp in the morning light.

As our journey to Mount Augustus was shorter than previous days we decided to re-enter the National Park and have a look at Temple Gorge. Before leaving Perth we had bought a pass for all the National Parks in Western Australia so we could drive right in.

The Kennedy Ranges are a pile of Permian sediments, mostly of shallow marine origin. You can get a geological map of the area HERE. This will tell you more about the geology than I can and with infinitely more accuracy!!! They are of an age with the Karroo in South Africa and are similar to rocks in South America, Antarctica and India – part of the evidence for the ancient continent of Gondwanaland.

Like almost all the rocks we saw they are RED! This is due to desert varnish – occasionally the rocks get soaked by some rain, the water dissolves some salts, the most colourful of which is iron, the hot desert sun draws the water to the surface along with the iron, the water evaporates and the red iron is left on the surface. 

In Temple Gorge
Walking into Temple Gorge

The gorges are caused by erosion and this can be spectacular.

In Temple Gorge
John demonstrates to Julie the contact of recent scree with Permian sandstone
In Temple Gorge
In Temple Gorge

After having seen the rugged beauty of Temple Gorge we returned to our trucks and set off for Mount Augustus. But we did not go far before our first stop. This was just outside the park at a roadside site loaded with shallow water fossils – mainly crinoids (sea fans) and brachiopods (shellfish). According to the geological map, mentioned above, this is near the junction of the Carboniferous and the Permian – the Callytharra Formation of Sakmarian age.

Kennedy Ranges Map with Track
The 1:250,00- Geological Map of the Kennedy Ranges, with some localities and GPS tracks added.Click on the map and you will be transported to the map on Flickr. Click on the three dots at the bottom right, then on “View all sizes”. This takes you to a page offering a variety of sizes for download. The “Original” size will download the map at full size with my additions.

The fossils indicate shallow sea water. Immediately below this is the Lyons Formation which is said to be glacigene. We did not get a chance to look at it but it is described (HERE) as being a tillite – that is a rock composed of stones dropped into the sea by melting icebergs. I have assumed that crinoids would be warm water fossils but perhaps they are hardier than I thought! The tillite is presumably the Australian equivalent of the Dwyka Tillite of South Africa.

We continued on our way, stopping at the side of the road for a picnic lunch.

Lunch stop
Lunch stop by a dry river bed.

After lunch we continued, passing a cyclist who had a little trailer and was pedalling hard! He was about the only other road user we saw all day! John was hoping to fill up at the settlement at Cobra but they no longer sold fuel. He would need to find fuel at Mount Augustus. Our 150 litre tank began to look even better.

Before long Mount Augustus came into view and our days driving was almost done.

Mount Augustus
Mount Augustus

We stopped at the Mount Augustus Caravan Park and found that they stopped selling fuel at 4PM. It was 30 minutes after that. This ploy is meant to ensure that people short of fuel, like John, would stay at the camp site until the pumps reopened the next day. This did not work in our case! We drove a few miles down the road and wild camped. We would come back the next day to fill up!

HERE is todays route and photos. Open in Google Earth

Our First Few Days – Mullewa to the Kennedy Ranges

When we woke on Sunday 11th August we found that it was wet! This was the only time in all our travels in Western Australia that this happened. We were in a valley and there was a fog which deposited condensation on everything. But our swags did their job and kept us and our sleeping bags dry.

Breaking camp north of Mullewa
Breaking camp.

We drove 530 km to the Kennedy Ranges National Park. It was another day of getting the miles under our belt but it was not all driving. We had not even got back to the road before we had our first stop. This was to look at the rocks in the bed of the Greenough River. These are granite gneisses, about 3 billion years old, with a very regular foliation, criss-crossed with felsitic and pegmatitic veins, often along faults. Julie loved it as being good illustrations of faulting. You can download a copy of the geological map from HERE.

Looking at geological features in the Greenough river bed
Simple geology in the bed of the Greenough River

Looking at geological features in the Greenough river bed

Not so simple geology in the bed of the Greenough River

Actually the more I look at it the less simple it appears!

Mullewa Map
The 1:250,00- Geological Map of the Yalgoo Area, with some localities and GPS tracks added.Click on the map and you will be transported to the map on Flickr. Click on the three dots at the bottom right, then on “View all sizes”. This takes you to a page offering a variety of sizes for download. The “Original” size will download the map at full size with my additions.

We eventually got onto the road which at this point was still tarred but it soon became dirt. In the UK we are not used to gravel roads but in most of WA they are the norm. Assuming they are well looked after and you are not being silly they can be fast and comfortable. Just keep your wits about you and you should be OK.

On the road
Typical West Australian roads.

This was a day to cover large distances but we did stop on occasion to look at things, eat and get fuel. One stop was Murchison which seems to consist of a small shop, cafe and filling station. There are a handful of houses and a caravan park. I suppose every vehicle coming along the road stops if only to say hello to the people at the cafe. Over the next few weeks we found that Murchison is typical of many places in the bush.

Murchison
Murchison

Other stops were to look at wild flowers. This was spring time in WA and at this particular latitude and date it was a good time for flowers.

Parakeelya flowers
Parakeelya flowers
Everlasting flowers
Everlasting flowers
Parakeelya flowers
A host of Parakeelyas at our lunch time stop.

 We stopped at Gascoyne Crossing for fuel for John’s car but it was closed! Fortunately it was not vital but it was a reminder that one shouldn’t let your fuel tank get too low.

We pressed on northwards and entered the Kennedy Ranges National Park. The main feature of this park is a steep escarpment of Permian sediments. The prominent cliffs are made of fine grained orange sandstone with a conchoidal fracture; John suggested that they were the result of loess deposits (formed as glaciers retreated) being blown out to sea.

In Honeycomb Gorge
Permian sandstone in the Kennedy Ranges

We walked up Honeycomb Gorge and found that the sandstone had some intriguing forms of weathering – rather artistic!

In Honeycomb Gorge
Weathering seen in Honeycomb Gorge.

We looked at the National Park camp site and decided that it looked rather crowded. So we drove out of the park for a few miles and found a camp site a few hundred metres from the road.