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Creekbed Erosion


Creekbed Erosion
Photo Information
Copyright: Steve Reekie (LordPotty) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1449 W: 146 N: 3764] (12035)
Genre: Landscapes
Medium: Color
Date Taken: 2009-01-11
Categories: Rain Forest
Camera: Panasonic Lumix DMC-FZ8
Photo Version: Original Version
Date Submitted: 2009-03-29 1:41
Viewed: 787
Points: 16
[Note Guidelines] Photographer's Note
Something different for a change....

A couple of photos I shot in the Fox River gorge,at a point near the Ballroom,where the river flows slowly beneath limestone outcrops and overhangs.

I put these shots side by side to show the effect the heavily acidic water here has on both the limestone rock and the logs in the water.
You can see that the same process of chemical and physical weathering has caused similar patterns of erosion in both the wood and rock.

Water which has been absorbed caerbon dioxide from decaying organic matter on the ground becomes carbonic acid,which will,of course,dissolve alkalike limestone rock.
Caves beging to dform when acidic water seeps into narrow fissures in limestone and begin to dissolve it away.
As the fissures widen,particles of sand and rock begin to get washed through in larger quantities,and the process of chemical weathering gives way to faster physical erosion.

After many years,cave passages hundreds of metres high can form underground.
The longest caves in the world are the passages and caverns of the Mammoth Cave system in Kentucky which is 591 kilometres (367 miles)long.
The deepest is Voronya Cave in Abkhazia,Georgia which is 2,191 metres (7,190ft)
The largest room ever discovered is the Sarawak chamber in Gunung Mulu National Park (Borneo,Malaysia),approximately 600 metres by 400 metres and 80 metres high!

In the area that I took these shots,there was evidence to suggest that there had once been an enormous cave passage which has long since collapsed to form the steep sided gorge .... and it all began with erosion like this!


I thought it was interesting enough to warrant a photographic comparison anyway,so,here ya go :)

Thanks for looking again.
Cheers
Steve
eqshannon, red45, jaycee, Luis52, albert has marked this note useful
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Critiques [Translate]

Namastay Steve,
A nice example showing soil erosion. Excellent composition with two different captures. Good documentary presentation. Thanks a lot for sharing.

Sincerely
Hara

  • Great 
  • roges Gold Star Critiquer/Gold Note Writer [C: 595 W: 0 N: 507] (3040)
  • [2009-03-29 3:27]

Hi Steve !
Nice catch some excellent colors.
Nice presentation.
Unfortunately the process of erosion is a process that expands and becomes dangerous.
A nice weekend,
Adrian

Way cool tool of duo-panel montaging Steve...Sometimes I think I see that way...different angles out of each eye:-) Or not...both images are well matched in contrast and lighting as well as teh focal interest...Great!
Bob

hello Steve
beautiful picture's
great sharpness
good colours with nice light
and i have a idee how it looks
i wil walk by this river to find something
greeting lou

  • Great 
  • red45 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2705 W: 74 N: 8864] (30243)
  • [2009-03-29 10:41]

Hi Steve!

Very interesting pictures and note. We've got similiar place in Poland - full of caves and rocks with fantastic shapes eroded by water with CO2. With all these ferns and moses your pictures look very good. Another good place to visit some day...

  • Great 
  • jaycee Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 2493 W: 11 N: 6885] (21912)
  • [2009-03-29 13:38]

Hi Steve,

Two excellent photos showing us what erosion looks like. Interesting to see the effects of the acidity on the log and the rock. We hear about it all the time but these shots make it clearer to me than all I've heard.

Jane

  • Great 
  • Luis52 Gold Star Critiquer/Gold Note Writer [C: 1110 W: 5 N: 3457] (12761)
  • [2009-03-29 19:45]

Hola Steve.
Great photos from and very interesting note You have here. Should be nice to walk arround there.
TFS My friend.
Luis52.

Hello Steeve,
Interesting photos and note
TFS
Albert

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