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From Ice to Fire 5

From Ice to Fire 5
Photo Information
Copyright: Neels Gunter (corjan3) Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 430 W: 49 N: 964] (4707)
Genre: Landscapes
Medium: Color
Date Taken: 2010-01-25
Categories: Ocean
Camera: Canon PowerShot A640
Exposure: f/2.8, 1/60 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2013-09-30 12:44
Viewed: 2187
Points: 22
[Note Guidelines] Photographer's Note
This is the fifth in the series under the title FROM ICE TO FIRE - A TWO HUNDRED MILLION YEAR JOURNEY BETWEEN TWO DESERTS. To follow the whole story one would have to start from Image 1.

The previous upload from this locality has less than adequate sharpness and so I have decided to post another image here that shows more of the succession. The tape measure is extended to a length of one metre.

The rest of the note is essentially the same as with No 4 in the series.

At 270 MYBP (Million Years Before Present) the Ecca Sea is still deepening and contemporaneous volcanicity is very evident. The thin shale layers that maintain the same thickness for as far as they are exposed settled out from suspension in deep tranquil water of this inland sea. Separating the layers of shale are thinner yellow layers of volcanic ash, each layer representing a volcanic eruption, that have been subsequently altered to claystone consisting of the mineral bentonite.

In the claystone layers occur very small quantities of little crystals of zircon, about one third of a millimetre long and much less in diameter, that contain uranium as an impurity which makes it possible to determine the age of the zircon which formed when the volcanoes erupted. The structure of zircon allows uranium atoms to be present but not lead which is too big to fit into the structure. However, as soon as the uranium is accommodated, it starts breaking down to lead which damages the zircon structure. The rate at which the uranium breaks down to lead is measurable and known and it is possible, by very complicated and specialised procedures, to accurately determine the amounts of uranium and lead in the zircon and hence it can be calculated when the process commenced, i.e. how old the zircon is and when the volcanoes erupted.

It is not known where the volcanoes were that produced the layers of ash - no remains of them have been found and they may even have been outside Gondwana as volcanic ash can travel thousands of kilometres in the atmosphere. Or they may be under the ice in Antarctica or under the sea on the Falklands Plateau.

kinglove, samiran88, maaciejka, devildoc, ramthakur, Maynayquan, Hotelcalifornia, peter_stoeckl has marked this note useful
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ThreadThread Starter Messages Updated
To ramthakur: Series of Imagescorjan3 2 10-01 19:21
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Critiques [Translate]

Ciao Neels, great view of interesting geological formation, wonderful warm colors, fine details, excellent clarity and splendid light, very well done, my friend, ciao Silvio

  • Great 
  • lousat Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 6595 W: 89 N: 15659] (65489)
  • [2013-09-30 15:56]

Hi Neels,a large view today of this incredible work made by the time,excellent details and colors despite the cloudy day! Have a nice day and thanks,Luciano

Hi Neels
照的清晰 很漂亮也很偉大的自然景觀

Hello Neels,
A great story with a good illustration.
waiting for the next picture of this series.

best wishes

Hi Neels,
nice photo of the series. Interesting as previous. Nice natural colours.
Thanks for sharing,

  • Great 
  • siggi Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3097 W: 109 N: 12399] (52850)
  • [2013-09-30 23:15]

Hello Neels.
The history of the genesis in the picture and very well illustrated and written word.
Beautiful layers of the rocks and very nice color design.Regards Siggi

Geological formations fascinate me immensely, Neels.
I missed your earlier posts, but I was drawn to this one, mainly because Marcus (a TN member, now inactive for years) used to post very interesting pictures of such formations. However, after looking at this picture, I realize that you have gone into investigating the history of these formations. Reading your note in conjunction with the picture is essential to understand and assimilate the significance of the phenomenon you have aptly named as 'From Ice to Fire'.
Thanks for providing intense experience in this field through your thought-provoking post.

Hi Neels,
Interesting story of geological formation with nice shot! Fabulous details and colors. Thanks for sharing and regards!

Hello Mr.Neels,
Interesting subject.Well demonstration.Like picture with different layer and colour.Very good NOTE also.
Thanks for sharing such attractive subject,
Regards and have a nice day,

fantastic geology, TFS Ori

  • Great 
  • PeterZ Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5137 W: 166 N: 13121] (49139)
  • [2013-10-01 11:37]

Hello Neels,
Special photo on a special subject. Very interesting. Taken from a good POV to show us the essence of this geological curiosity.

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