From Ice to Fire 15
|Copyright: Neels Gunter (corjan3)
|Date Taken: 2011-03-01|
|Categories: Mountain, River|
|Exposure: f/14.0, 1/320 seconds|
|More Photo Info: [view]|
|Photo Version: Original Version|
|Date Submitted: 2013-10-29 15:11|
|[Note Guidelines] Photographer's Note|
|The 15th in the series under the title FROM ICE TO FIRE - A 200 MILLION YEAR JOURNEY BETWEEN TWO DESERTS. To follow the whole story, one would have to start with Image 1.|
The previous upload, from the same locality, lacks somewhat in sharpness and so I have decided to upload this image in addition. Is this now oversharpened? The note is essentially the same, and reads as follows:
THE LYSTROSAURUS ENIGMA: The images in this series are from a north-south striking transect across a thickness of several kilometres of sedimentary strata that are consistently dipping to the north at an ever decreasing angle. Hence, in moving northwards one is continually going upwards in the succession from Carboniferous through late Permian in time. The environment gradually changes from an ice desert through lacustrine (lake) into a wet continental fluvial regime of a very large river system coming off the mountains in the south which are still being pushed up by the major continent-continent collision that is occurring there. The succession is world-famous for its unbroken record of mammal-like reptiles, of which Lystrosaurus is one, and of which a very large number have been found.
At this level, 248 million years before present, a sudden, very drastic and the most disastrous event in the history of life on Earth occurs and so the Triassic Period ensues. In the bottom part of the photograph are the last of the green shales of the wet Upper Permian environment. Red Triassic shales suddenly dominate and more than 90% of life on Earth disappears at the Permo-Triassic Boundary. The red colour of the argillaceous (very fine grained) shales, the silt-filled desiccation cracks seen in cross-section nearly halfway up in the image, as well as many other feautures, testify to the sudden domination of a very arid environment. The anatomy of Lystrosaurus with its sprawling gait, it's two tusks grown out of the upper jaw as the only teeth, it's beak-like mouth for cutting vegetation and the nostrils set high on the forehead points towards adaptation to a wet environment and Lystrosaurus is indeed found down to 50 m below the red shales where it foraged in the very shallow water of the swamps and marshes. However, as the red shales appear so do numerous fossils of Lystrosaurus and, just as almost everything around it, Lystrosaurus should succumb to the new hostile environment.
It is now thought that the sudden change was caused by a series of megavolcanic eruptions in present-day Siberia. Not only was an inordinate amount of steam released into the atmosphere, and steam is a serious greenhouse gas, but other toxic gases and huge amounts of very abrasive volcanic ash were pumped into the air and screened out the light of the sun for a long time. Thus died off the plants, hence also the herbivores and then the carnivores. Amidst all of this Lystrosaurus looks around, watches everyone else die and says "Bye bye, I love this" and so continues to happily live through another sequence of sedimentary strata more than 900 m thick, which takes approximately 40,000,000 years to be deposited. This implies that Lystrosaurus was adapted to an arid environment contrary to its anatomical indications. Six different reasons have been offered to explain the peculiar survival of Lystrosaurus but none holds water. So how did Lystrosaurus survive then? Answer is, it did not. It was just as vulnerable as everything else and, being a water-dwelling animal, they converged in pools of water that were drying up, similar to fish in a drying pond, and hence the abundance of Lystrosaurus fossils. And the perceived northerly dip does not exist from here onwards anymore so that where Lystrosaurus is found in the north, it is still at the same level as in the south and not 900 metres higher up, so that it did not persevere through a great thickness of sedimentary deposits and over a period of 40 million years. But please do not tell the palaeontologists as it will only leave me full of bullet holes.
PS: Adding to the enigma - The great preservation potential for fossilization in red shale is a mystery that cannot yet be explained.
NOTE: The little slanting tree at the top is no more. Everything is in a state of change: "No vestige of a beginning, no prospect of an end" - Anonymous author.
maaciejka, kinglove, anel, marius-secan, Maynayquan, peter_stoeckl has marked this note useful
Only registered TrekNature members may rate photo notes.
- [2013-10-29 15:44]
Hi Neels,different and beautiful,i like this imposing perspective to see this artwork made by the time and weather,magnificent details everywhere and nice trees on the top like the cherries on the cake..ehehe..have a nice evening and thanks,Luciano
another interesting presentation and note. Perfect point of view. Nice colours. Interesting shapes of rocks.
Thanks for sharing,
照的清晰 真的很漂亮 把地理學和風景連在一起
非常有創意 這風景真是美麗 真有巧思
Ciao Neels, lovely composition with fantastic rocks, wonderful colors, excellent clarity and splendid light, very well done, my friend, ciao Silvio
- [2013-10-30 6:47]
Bela paisagem retratando a erosão do solo inclusive de uma árvore quase caindo muito atraente a imagem meus parabéns.
- [2013-10-30 7:01]
A most interesting description of this different layers very well explained in your note. Fascinating history of Earth! The sharpness is good, I don't think it looks oversharpened, sometimes it depends of the screen. Very well framed with this vertical composition. Très intéressant!
- [2013-10-30 8:02]
Another beautiful photo in the series. Interesting different layers in excellent sharpness and details, not oversharpened. Good choice of composition and very nice natural colours.
Once again a wonderful image taken from a very good POV. Exceptional details and perfect depth of field. Outstanding colors. You managed perfect this composition.
Thanks for sharing!
Fantastic capture of these layers with excellent lighting, superb sharpness, great fine details, and splendid natural colors. I like the blue sky and some trees on the top. Very well done, my friend. Thanks and have a nice day!
Interesting formations and beautiful photo Neels! Very good composition, wonderful colours and good sharpness. Interesting note too!
Eerstens, jammer ek sien nou eers jou reeks. Soos ek voorheen gesê het was ek 'n ruk af van fotografie weens persoonlike redes. Oor jou notas, . . ek drink elke woord op en probeer dan waarnemings maak na wat jy verwys. Die fotografie is vir my uitstekend en die kleure, skerpte en detail help my 'n bietjie meer om jou notas te probeer volg. Ek gaan dit weer van vooraf lees. Dis 'n uitstekende reeks en kan nie wag vir die volgende nie.
Ek weet nie of jy my vorige boodskap gekry het nie want jy het nie daarop geantwoord nie.