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Badlands NP


Badlands NP
Photo Information
Copyright: Peter van Zoest (PeterZ) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5137 W: 166 N: 13121] (49139)
Genre: Landscapes
Medium: Color
Date Taken: 2016-09-03
Categories: Desert
Camera: Nikon D90, AF-S Nikkor 18-70mm 1:3.5-4.5G ED DX, Digital RAW
Exposure: f/11, 1/500 seconds
Details: Tripod: Yes
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2016-10-23 11:51
Viewed: 1603
Points: 12
[Note Guidelines] Photographer's Note
In September we traveled through fascinating landscapes.

Badlands are a type of dry terrain where softer sedimentary rocks and clay-rich soils have been extensively eroded by wind and water. They are characterized by steep slopes, minimal vegetation, lack of a substantial regolith, and high drainage density. They can resemble malpaís, a terrain of volcanic rock. Canyons, ravines, gullies, buttes, mesas, hoodoos and other such geological forms are common in badlands. They are often difficult to navigate by foot. Badlands often have a spectacular color display that alternates from dark black/blue coal stria to bright clays to red scoria.

Composition
Badlands are partially characterized by their thin to nonexistent regolith layers. The regolith profiles of badlands in arid climates are likely to resemble one another. In these regions, the upper layer (~1–5 cm) is typically composed of silt, shale, and sand (a byproduct of the weathered shale). This layer can form either a compact crust or a looser, more irregular aggregation of "popcorn" fragments. Located beneath the top layer is a sublayer (~5–10 cm), below which can be found a transitional shard layer (~10–40 cm), formed largely of loose disaggregated shale chips, which in turn eventually gives way to a layer of unweathered shale. Badlands such as those found in the Mancos Shale, the Brule Formation, the Chadron Formation, and the Dinosaur Provincial Park can be generally said to fit this profile.
In less arid regions, however, the regolith profile can vary considerably. Some badlands have no regolith layer whatsoever, capping instead in bare rock such as sandstone. Others have a regolith with a clay veneer, and still others have a biological crust of algae orlichens.
In addition to lacking significant regolith, they also lack much vegetation. The lack of vegetation could very well be a result of the lack of a substantial regolith.

Formation
The formation of badlands is a result of two processes: deposition and erosion. The process of deposition describes the accumulation, over time, of layers of mineral material. Different environments such as seas, rivers, or tropical zones, deposit different sorts of clays, silts, and sand. For instance, the badlands formations in Badlands National Park, South Dakota, underwent a 47-million year period of deposition which spanned three major geologic periods (the Cretaceous Period, the Late Eocene, and the Oligocene Epochs), resulting in clear, distinct layers of sediment which serve as a dramatic display of the law of superposition. Once the deposited sediments have solidified, the sedimentary material becomes subject to erosion. It is sometimes erroneously taught that badlands erode at a steady rate of about 1 inch per year. In actuality, the precise processes by which the erosion responses take place vary depending on the precise interbedding of the sedimentary material. In 2010, researchers at Badlands National Park initiated a 3-year project to learn more about the actual erosion rate of the specific badlands found in that park.

Source: Wikipedia

lousat, Hotelcalifornia, tuslaw, Hormon_Manyer has marked this note useful
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Critiques [Translate]

  • Great 
  • lousat Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 6595 W: 89 N: 15659] (65489)
  • [2016-10-23 14:44]

Hi Peter,the colors of ground and rocks are fantastic,so sweet and pastel! A lovely landscape,unique talking about the history and rock formations,your note are very useful too,very well done! Have a nice week and thanks,Luciano

beautiful ! TFS this arid landscape, Ori

Hello Peter,
Beautiful landscape! I Luke the way you achieved details. Beautiful color and sharpness too. Very good work.
Thanks for sharing with informative NOTE,
Regards,
Srikumar

  • Great 
  • tuslaw Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2754 W: 282 N: 4931] (19883)
  • [2016-10-25 19:49]

Hello Peter,
What a gorgeous shot of the Badlands in brilliant color and total sharpness. Exposure is perfect and I like the composition you chose.
I remember the first time I saw this beautiful area, your photo brings back some wonderful memories of that special time.
Ron

hallo Peter
wat een mooi landschap en die prachtige kleuren zijn wel vreemd om dat zo te zien in die bergen
bedankt gr lou

Hi Peter,
Fantastic rock formations captured in an eye-pleasing composition. Great lights as well. I love the way you used the cliffs/hills and the sky as various layers, and the color contrast between them is really attractive. Amazing shot. Bravo!
Kind regards from Ireland, László

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