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Author Topic: The amazing beauty and geology of Roebuck Bay  (Read 1468 times)

Tony Jay

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The amazing beauty and geology of Roebuck Bay
« on: September 12, 2012, 08:23:06 AM »

Quite a place.
Amazing diversity of rock types here.
I don't fully understand the diversity of rock types here - will have to read up.
Nonetheless, enjoy.

Regards

Tony Jay
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francois

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Re: The amazing beauty and geology of Roebuck Bay
« Reply #1 on: September 12, 2012, 09:33:41 AM »

I quite like the first photo. It has a very southwest-esque look (minus the red colored rocks). The second show those two magnificent trees but the red rocks in the background also tend to attract my eyes… The last one is relaxing, good textured rocks along with nice and soft  sky colors. Roebuck Bay seems like a tempting place!
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Francois

Walt Roycraft

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Re: The amazing beauty and geology of Roebuck Bay
« Reply #2 on: September 12, 2012, 12:35:36 PM »

The first one looks like an origami creation, very cool.
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MTGFender

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Re: The amazing beauty and geology of Roebuck Bay
« Reply #3 on: September 13, 2012, 12:17:13 PM »

Fantastic rock formation. Like the #2.
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Paulo Bizarro

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Re: The amazing beauty and geology of Roebuck Bay
« Reply #4 on: September 14, 2012, 04:24:20 AM »

As a geologist, and looking at the photos, #3 seem to be stromatolites, the result of algal mound edifications. They end up lloking like bath tubs upside down. These algae have been doing this stuff for hundreds of millions of years, and keep doing it at present day.

In fact, Shark Bay in Australia is often cited as a modern day analogue for these things, where one can look at present day structures.

Nice lighting on the photos too!

Tony Jay

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Re: The amazing beauty and geology of Roebuck Bay
« Reply #5 on: September 14, 2012, 06:26:27 AM »

Thanks for the comments Paulo.

Apparently most of the geology of this region of Australia consists of layered sandstone, siltstone, and mudstone, with a thick layer of blood red sand on top.
I also found some very interesting rippled rock that appeared to be limestone as well, but may not be since the patterns probably indicate a sedimentary origin.
I am not sure whether there are examples of old stromatolite formation in this are or not, however, I must admit that stromatolites did not cross my mind viewing these rock formations at all.

Regards

Tony Jay
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