|Fraser Island - Kirrar Sandblow (Rainbow Gorge)||August 25 - 27 2017|
| Following day I felt I could stretch my legs some more.
I feel like I'm steadily shaking off my illness. Steadily able to reduce the medication.
Muscles that ache from exercise are so much better than muscles that are painful from disease.
So I set off to the Kirrar Sandblow.
The track entrance is a bit more than 1km north of us.
| On a different map its labelled Rainbow Gorge.
These formations are less than 50mm across.
Small sandstone chips with sand eroded around them.
| The first real view of the sandblow.
The Fraser Island sand blows are typical of some coastal dunes..
The dunes we saw at Mungo and parts of Morrocco are U-shaped, with the wind blowing from the bottom (crescents).
These dunes are U-shaped with the wind blowing from the top (parabolic).
Both formed by the wind from predominantly one direction. But the sides of parabolic dunes are anchored by vegetation.
The area in the foreground has been uncovered leaving very soft sandstone which is almost still hard sand.
| There's a mixture of colours in that underlying rock.
Rock that has been formed from sand and the weight of it above.
Purples from, presumably manganese, reds from iron, and yellows.
| The sand is being moved away from the coast and building a
high dune as it covers vegetation.
There are deposits of ilmenite and rutile on Fraser Island which were mined from 1949 to 1965.
Rutile is predominantly titanium dioxide. Normally dark / black. However, titanium dioxide is also the brilliant white pigment used in paints and other applications.
|Sand blasted wood.|
| Looking back from the top of the dune.
I was a bit ambivalent about my footsteps in the pristine dune.
There were a few older footprints off to one side. And they disappear fairly quickly.
| The leading edge of the dune.
| To the sides I was a bit surprised to find the grass with
the long runners.
Partly why its a parabolic dune methinks.
| Ali thought this reminded her of a glacier.
Just that the sand is flowing uphill.
| The wind destroys any tracks fairly rapidly.
I think this is a big enough track to be that of a goanna.
I walked back along the beach to find Ali paddling in the health giving salt water.
Lunch time, and a siesta.
Not quite satisfied we woke at 05:30 (with a bit of help from the alarm clock)
and sallied forth in the direction of Kirrar Sand Blow again.
Things can look different in the early morning or evening.
The sun hasn't come up yet. Or at least its hiding behind some clouds.
There's a bit more contrast between the brilliant white of the sand and the "almost sandstone".
Just illuminating the tops of dunelets (is there such a word?).
The white sand intrigued us a bit.
We assumed it was the freshest sand.
Sun on the dune.
Its really quite cold with a stiff breeze.
|Retracing yesterday's steps. But not to the top of the dune.|
The mystery of the white sand deepens.
Its under the sandier coloured sand, disturbed by our footsteps.
As we read a bit more it seems what we initially thought of as only sands from the granites of NSW have been washed northwards we realise that there is a wide mixture of different mineral sands.
The common source of titanium dioxide is rutile or ilmenite. But there is also anatase, which is white. Just not as common.
We have really only scratched the surface (so to speak).
|A last look before we retreat for breakfast and some warmth.|
Back at the campsite a lone spangled drongo in the casuarinas.
We are struggling with the latest edition of bird book. It doesn't look very much like its picture.
Had to look on internet to check.
By 4pm what started as a day with a cool breeze and enough clouds to hide the
sun had become very draughty, cold and uninviting.
A quick look outside to check.
A bit of rain in the distance, but nothing much showing on the radar.
Which suited the intrepid duo, though we didn't really need an excuse to doss and rest our sore feet and muscles.
A day to catch up on thinking time.
Then another day of think time.
This time without the early morning effort. Its also back to cloudless blue skies and gentle breeze.
Longer than usual for the birds to get used to our presence. We think a honey eater in the casuarina.
Monday the tide will be another hour later and we'll depart the island.
About 60 km to drive along the beach to the ferry.
At last. One of the rainbow bee eaters stayed still long enough, and the sun
had moved to a reasonable place in the sky.
From only one visiting a few days ago there's now about four. Not quite as shy as they were.
|Brisbane to Alice Springs - Brisbane to Cawnpore Lookout||March 29 - April 1 2018|