Australia

Wolli, I'm getting off the track, and I haven't answered your point at all, but it's because I can't, not because I don't want to. I think we'd be safe to discuss it further here if you like and stay on topic because I can flavour my responses with local anecdotes from my own flying career. ;)
I think I might actually kill to have a flying career...
 
King's Canyon (Watarrka)

Australia has a "Red Centre". It appears on satellite images as a large red dot.



MapKingsCanyon.jpg


It looks like this when you zoom in:




King's Canyon (Watarrka)

Kings Canyon has the deepest gorge in the Red Centre, with sandstone walls rising to a height of 270 m, sometimes looking as if cut with a knife. On the bottom of the canyon are waterholes which never dry up. In the upper part of the gorge is the Garden of Eden, with a lush growth of vegetation, including plants which are relics of earlier climatic conditions (e.g. palm ferns).

To the Aborigines this area was a sacred site, and their dwellings and places of assembly were decorated with rock paintings. The national park borders directly on Aboriginal land, and the Luritja tribe has three settlement areas within the park, to the east at Bargot Springs, in the center at Lilla and to the north of the new tourist center

Their traditional name for the area is Watarrka.

Ernest Giles was the first white man to see the dry river bed (though not the canyon itself, 30km further northwest), in 1872, and named it after his principal sponsor, Fieldon King. His favorable report brought many cattle farmers to the area.

The area has been accessible only since 1960, when Jack Cotterill, on his own initiative, built a track to Kings Canyon.

On the plateau above the canyon is the Lost City, an area of red sandstone rocks weathered into the semblance of ruined houses and streets. The rock is brittle and not safe for rock climbing.

A steep walking trail leads up to the plateau, along the top of the canyon walls and down through the Lost City to the Garden of Eden, then across to the south wall of the canyon, down to the bottom of the gorge, passing Aboriginal rock paintings, and so back to the parking lot (6 km, 3-4 hours; water, head covering and stout footwear essential). There are no safety rails on the steep rock faces. The shorter Kings Creek Walk (1.5km) takes about an hour.

©planetware


So there!
 
Actually, it appears to me to be more a series of salt deposits or chalk beds.

What are those white things?


Salt. It's a watercourse that has first been reduced to a string of unconnected pools which have evaporated away to leave the salt.

It's dazzling with the Sun shining off it. Salt lakes (or salt pans) like this are common in central Australia.


This picture is a zoom in to near the centre of the picture you provided:

SaltLakes.jpg
 
Salt. It's a watercourse that has first been reduced to a string of unconnected pools which have evaporated away to leave the salt.

It's dazzling with the Sun shining off it. Salt lakes (or salt pans) like this are common in central Australia.


This picture is a zoom in to near the centre of the picture you provided:

[qimg]http://www.yvonneclaireadams.com/HostedStuff/SaltLakes.jpg[/qimg]​
That is interesting!

Where did all the salt come from?

Okay, that sounds like a naive question, but... Was the river once connected to the sea? Did the sea once cover that part of Australia? Was the salt eroded out of the surrounding area (but that doesn't seem likely, since the other minerals would have been mixed with it, and it wouldn't be so white)?

There was a link on Google earth to a panorama taken from the bottom of the King's Canyon. I love red rock country. There's something very magical about it, no matter where on the earth it appears.
 
That is interesting!

Where did all the salt come from?

Okay, that sounds like a naive question, but... Was the river once connected to the sea? Did the sea once cover that part of Australia?


Yep.


Australia 290 - 245 million years ago:

It was extremely cold and dry during this period and Australia lay near the South Pole. Gradually, the climate warmed up and the ice caps and glaciers melted. The sea levels rose and swamp forests which gave rise to Australia's coal deposits were common.


MapAncient1.jpg


Australia 245 - 208 million years ago:

Australia stayed near the South Pole but in a warmer, humid belt. Large deltas, rivers, lakes and swamps were familiar sights. The plants changed, the climate warmed and dried and conifers began to develop. Lizard-like reptiles and mammal-like reptiles were later replaced by the first of the dinosaurs. In the early Cretaceous the global temperatures rose, volcanoes were active, and oceans flooded Central Australia as the sea floor expanded.


MapAncient2.jpg


Going back even further . . .


Australia: The Land Where Time Began

Although the Australian landmass of today is much different from the original one that emerged from the sea, parts of it have remained unchanged, or mostly so, from that first dry land, possibly the first dry land in the world. Parts of Australia emerged from the sea at least 3000 million years ago. In the southern part of Western Australia is an ancient block of rock called Yilgarnia by geologists. This block has not been covered by the sea since it first rose from the water. The granite rock of Yilgarnia crystallised at least 2700 million years ago.

More than half of the surface rocks of Australia formed in the Precambrian, more than 600 million years ago. It is widely believed by scientists that rocks of a similar age underlie the younger rocks over much of the remainder of the continent.

Between 2.3 and 1.9 billion years ago the original Pilbara and Yilgarn blocks were joined by a number of other blocks of granite that rose above sea level.

During that time period the foundations of the Australian continent are believed to have drifted from the North Pole to the South Pole and to be on their way north yet again.

Between 1.8 and 1.4 billion years ago the aggregation of granite blocks that comprised the Australian land mass, the western 2/3 of the present continent, were welded together by crustal movement and massive intrusion of granite between the original blocks to form 3 large blocks that now comprise a rigid base for the remainder of the continent to be built from.

These blocks were separated by mobile belts of thin crust that acted like shock absorbers as blocks were moved around and they absorbed some of the shock of the collision with Antarctica by being pushed up to form mountain ranges. By about 900 million years ago all the blocks had been welded together to form the single land mass.


Running into Antarctica was just asserting our proper place in the scheme of things. New Zealand wisely keeps well clear.



Was the salt eroded out of the surrounding area (but that doesn't seem likely, since the other minerals would have been mixed with it, and it wouldn't be so white)?


Not eroded, no. Rain falls on the mountain ranges, mainly to the east and northwest and in its journey, the water leeches salts and other minerals from the Earth. When the water is evaporated off the salt remains, and in fact often forms pillars and things that "grow" out of the water.

There are indeed traces of other minerals present, particularly the red streaks of iron compounds. Common salt is by far the most abundant thing left behind though. I assume it's mostly sodium chloride, or at least that's what it tastes like.

The whiteness of the stuff seems to come from its crystalline structure as much as its colour. It's really, really shiny.

All things considered, I'd say the salt got into central Australia in more-or-less the same way it got into the ocean.

I should mention, while we're at it that a fair slab of southern central Australia is below sea level, including the famous Lake Eyre.



There was a link on Google earth to a panorama taken from the bottom of the King's Canyon. I love red rock country. There's something very magical about it, no matter where on the earth it appears.


Absotively. Here's more:


RedCentre.jpg
 
Great picture above, but it won't feed a goat to the square mile. Much of Western Australia is baron. People wonder why we don't take more in but the truth is we are at our limits now.As you probably know the population lives mainly on the coast H.B.S. Had a friend call in who works at the mines in central Qld and they are already hitting summer temps 40 +C while on the coastal strip we have much cooler time. Tewantin a little town near Noosa(just up the road) is in the Guinness Book Of records as the most suitable habitat for humans in Australia, that is climate wise. Dave can you find a picture of Lake Eyre for H.B.S.? Now there's some salt. Some of the red soils have so much iron that a magnet will pick up crumbs and lumps. In other places the rocks are so sharp and pyramid shape they wreck soft wall tyres, I run light truck tyres when we go west. And as much as I hate to say it, tupperware is the only thing that doesn't get dust in it.
 
Lotsa salt. Lake Eyre is actually full of water at the moment, just for a change.




This is Warburton Creek running into Lake Eyre North. The photo was taken in February this year.


Also, yay for Tupperware.
 
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Far more eroded than the Red Rock Country in the western US.

One of my favorite features there is the Vermilion Cliffs, and is truly cool. But there's lots more, Sedona, Zion and Bryce National Parks...

See, I don't think a month would be long enough for me to stay in Australia seeing everything I want to see! And, as Old Bob points out, there's places that at certain times of year are incompatible with human habitation, I'd have to stay over a whole year to see everything! I guess I'll have to wait until I'm retired...

But the information about the formation of Australia is interesting, Akhenaten, especially that North Pole/South Pole migration of the landmass...
 
And as much as I hate to say it, tupperware is the only thing that doesn't get dust in it.
Why? Tupperware is fantastic.

See, I don't think a month would be long enough for me to stay in Australia seeing everything I want to see!
But that's true of anywhere you care to go. I would have loved to have seen more of the USA while I was there, but I didn't have time. I got to see some of LA, the Grand Canyon, Meteor Crater, the Hoover Dam and Las Vegas, and I had to be satisfied with that. I didn't get to San Diego or San Francisco like I would have liked to, or to any of the other places I'd love to have seen. That's what you have to contend with when you travel - that you'll only be able to see a fraction of what you'd like to be able to see. So choose wisely, and come to Canberra for at least a weekend. :)
 
Why? Tupperware is fantastic.

But that's true of anywhere you care to go. I would have loved to have seen more of the USA while I was there, but I didn't have time. I got to see some of LA, the Grand Canyon, Meteor Crater, the Hoover Dam and Las Vegas, and I had to be satisfied with that. I didn't get to San Diego or San Francisco like I would have liked to, or to any of the other places I'd love to have seen. That's what you have to contend with when you travel - that you'll only be able to see a fraction of what you'd like to be able to see. So choose wisely, and come to Canberra for at least a weekend. :)

And like your visit to the US, I expect my visit to Australia will be a once-in-a-lifetime event, but damnit, I don't want to miss anything!
 

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