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I've got a lot of different salt polygon pictures from Death Valley! Here's one taken before sunrise, with the crescent moon setting behind the Amargosa Range. The colors here are good, but about 10 minutes after this shot, the colors were amazing (I'll post the picture within the next several weeks). These were the best polygons I could find anywhere in the valley, even after extensive searching. Before the trip, I naively assumed that the salt polygons were easy to find year-round, because of the abundance of pictures around the internet. Wrong! Apparently recent rains destroyed the easily-accessible shapes. I hiked around Badwater Basin and also down to Cottonball Basin, with no luck (these were the 2 spots that most people indicated for salt shapes). My last shot was to explore north of the West Side Road, and with some serendipity I happened across these polygons!
Death Valley itself is really amazing. The bedrock beneath the Amargosa and Panamint Mountains folds beneath the basin, and over time thousands of feet of sediment has collected. The use of gravimeters has shown that the bedrock is more than 9000 ft beneath Badwater Basin, with layers of salt, silt, clay, and dirt filling up the space. Death Valley is actually a basin - water comes in, but doesn't exit; thus, huge amounts of sediments collect here.
Interesting patterns are reminiscent of the salt polygons in Badwater Basin. Perhaps they're formed in a similar way?
The Saar Polygon in Ensdorf, Saarland is a monument commemorating the coal mining industry in Saarland, which ended in June 2012.
Handmade mixed-media abstract art created mostly with colored pencils, watercolor colored pencils, and clear blenders.
I also used permanent markers and ball-point pens.
Completed Nov 3, 2019
Matted to 11X14 inches
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In Explore, Jan 12, 2021
Thank you, everyone, for views, faves and comments.
We interrupt our regularly scheduled Iceland landscape programming to bring you recent footage of an event in Death Valley California, where the desert dunes at Mesquite seemingly summoned forth the mighty forces of howling wind and apocalyptic rain to scour themselves clean of all traces of human intrusion. This buried branch of some once mighty Mesquite tree crooks its withered arm to conjure up forces of power beyond imagining (well actually, I stuck around to watch from the safety of my car, so I can now imagine them pretty well).
All fictional allegories aside, I managed to free up a late afternoon from a conference in Vegas and I was trying to decide where to go shoot, but we'd been surrounded by some crappy weather for several days and it looked to me like the only hope of an opening was to the west over Death Valley, so that's where I headed, dreaming of finally getting that burning sunset over some water-filled polygons on the Badwater basin. However, when I crested the road near Furnace creek and could see the basin stretched out, I saw a distinct cloud of sand dust over what I guessed would be Mesquite Dunes and so changed my plans to head in to the heart of the sandstorm. Having seen many great windswept dune pictures over the years but never having managed to get one myself, I figured I had a chance at doing both that AND sunset over at Badwater. Sometimes I get greedy as a photographer and my eyes grow wider than my mental scheduler and reasonable speed limits can deliver. In any case, I arrived at Mesquite pleased to find the wind whipping up a frenzy of sand and that the wind had erased what are normally an army's worth of footprints all over the dunes. So glory be, I had a chance. Many shots (and mouthfuls of grit) later, I did come away with some interesting pics, as well as with more lessons in shooting in windy conditions.
Unfortunately my sunset plans were blown (pun intended) by a layer of cloud that popped up right at the last minute to obscure the sun. However, these terrific storm clouds coming in from the north over the Funeral mountain range provided an interestingly gloomy backdrop to the late afternoon sun rays illuminating the dust clouds. Heck, I didn't even have to make up fictional names to go with my fire-and-damnation title, Death Valley is full of grim sounding names already!
Polygons are of great interest because they often indicate the presence of shallow ice or of desiccation such as in a mud flat. However, Nature sometimes seems too clever for us.
Polygons form by the intersecting ridges of sand dunes. If this deposit were to become indurated and eroded, we might not be able to tell that they originated as wind-blown dunes, and interpret the polygons as evidence for a dried-up lake, for example. Dunes often accumulate in the bottoms on craters, also a good setting for a (temporary) lake.
The illumination is coming from the upper left, so the bluish ridges are high-standing.
Enhanced color image is less than 1 km (under a mile) across and is 252 km (157 mil) above the surface. For full images including scale bars, visit the source link..
www.uahirise.org/ESP_031138_1380
NASA/JPL/UArizona
The Comma is a fascinating butterfly. The scalloped edges and cryptic colouring of the wings conceal hibernating adults amongst dead leaves, while the larvae, flecked with brown and white markings, bear close resemblance to bird droppings.
The species has a flexible life cycle, which allows it to capitalize on favourable weather conditions. However, the most remarkable feature of the Comma has been its severe decline in the twentieth century and subsequent comeback. It is now widespread in southern Britain and its range is expanding northwards. butterfly-conservation .org
Das Saarpolygon in Ensdorf (Saar) ist ein Denkmal zur Erinnerung an den im Juni 2012 endgültig beendeten Steinkohlebergbau im Saarrevier.
Das Saarpolygon steht auf der Bergehalde Duhamel in Ensdorf, der Bergehalde des Bergwerks Saar. Diese Halde mit einer Grundfläche von rund 50 Hektar erhebt sich rund 150 Meter über das umliegende Saartal. Auf Grund der exponierten Lage ist das Polygon weithin aus allen Himmelsrichtungen sichtbar.
Das begehbare Denkmal ist rund 30 Meter hoch. Zu dem rund 35 Meter überspannenden Querstück führen von beiden Seiten genau 132 Stufen in 25 Meter Höhe. Die Aussichtsplattform wiegt rund 60 Tonnen. (Wikipedia)
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A Polygon derives from the greek word meaning many sides and is considered to be an unbounded sequence, or circuit of alternating segments (sides) and angles (corners).
The modern mathematical understanding of a Polygon is to describe this structural sequence in terms of an 'abstract' polygon which is a partially-ordered set (a poset) of elements.
The interior body of the Polygon is an entirely other element; and for complicated technical reasons so is the null polytope or nullitope - but that is for another future series.
Engineering as Art
Greek Mythology
Series 5 of 5
What the opposing angles fail to realize is nothing would be possible without the holding foundation.
Like many Commas, the Gray Comma is best identified with the ventral view which in its case is a cryptic charcoal gray pattern and accounts for the common name. They are very difficult to find when perched on a tree trunk or like this one, gathering nutrients from wet, muddy places. There is a striking difference when they open their wings to present the dorsal view which I also posted this evening and looks like the dorsal view of many of the Comma species.
Elk Island National Park. Edmonton, Alberta.
This twelve sided barn was built in Mystic Quebec, Canada, by Alexander Wallbridge in 1892. Suspended from the top of the barn's conical ceiling, the original mechanism for rotating a large turntable in the centre of the barn is still in place. The turntable, much like the railroad turntables of days gone by, enabled fully laden wagons to enter the barn and to be rotated to the appropriate storage bay, where they would then be unloaded. The building is now a museum.
As it dries, clay shrinks. Tearing along the edges makes cracks that join neighboring cracks, creating polygons. Other cracks stop before joining, like punctuation marks.
These mud cracks on the Mojave Desert playa have a white surface. The cracks reveal underlying brown tones. The photo was taken from standing height.
The resulting pattern might be a good model for floor tiles.
Badwater in Death Valley with awesome last bits of sunlight kissing the tops of the salt polygons. One of the hottest (in the summer) and lowest (-200 feet below sea level) places on earth. I can just imagine cooking eggs out here in August.... no salt needed :D
Thanks for Looking.
The ice floating just off shore at Bear Lake reminds me of the salt formations at Badwater in Death Valley.
Construit dans le dernier tiers du VIème siècle av. J.C. afin de soutenir la terrasse du temple dit "des Alcméonides".
Il s'étend sur près de 84 mètres d'Est en Ouest auxquels s'ajoutent 25 mètres sur le côté Est et 12 mètres au côté Ouest.
Built 2016
Architects: Katja Pfeiffer and Oliver Sachse
(Photo: © Zippo Zimmermann, www.designladen.com – unauthorized use prohibited)