Gallery: Photographers Capture Mysterious, Beautiful Patterns in Sand
01sandy-chevrons
A single sand grain is a simple thing. But en mass, grains of sand build, slide and settle into beautiful and mysterious patterns we admire, but cannot always understand. Sand has superhero qualities, as far as geological deposits go. Behaving at times like a solid, at times a liquid and at times a gas, it is a master shape-shifter. Formed by wind and water, sand allows large-scale geography to play out in miniature: settling into ripples, channels, canyons, valleys and deltas. Sand is born as tiny pieces break away from rock. Young grains have rough edges, which smooth with time. The roundest grains are found in the desert, where the constant shifting winds rub the grains against each other, grinding them to a smooth polish. Because of this, dunes, like those of the Sahara, move in vast waves. For a geologist, sand is any particle of a certain size. By studying rocks that were made when sand was deposited and compacted over millions of years, geologists can learn about the conditions under which the sand was laid down. And sand can be made of anything — the [Huygens probe found “sand,”](http://www.nasa.gov/mission_pages/cassini/multimedia/pia11829.html) made of hydrocarbon ice, when it landed on Titan — and comes in many colors. The enormous golden dunes of the world are made mostly of silicon dioxide, in the form of quartz. Bright white sands are made of limestone or gypsum, in the case of [White Sands National Monument](http://www.nps.gov/whsa/index.htm), New Mexico. Magnetite or obsidian give sands a black color. Greenish sands hold chlorite-glauconite or olivine, also called peridot, when it is of gem-like quality. Iron-bearing sands are deep yellow, red and orange. Worn coral deposits give some beaches a pink hue. Sand goes into nearly as many materials as it comes from: glass, bricks, concrete, paint and electronics, to name a few. It is key to the workings of our natural world and a source of endless fascination for arenophiles (sand enthusiasts). To bring out your inner arenophile, we’ve gathered some of the strangest and most impressive pictures we could find of sand patterns. __Above:__ Mysterious Ridges ----------------- Martyn Gorman has found these weird and wonderful formations near his home along Scotland’s east coast on two occasions. What is at work in this magical intersection of sand and physics, no one, it seems, knows. *Image: [Martyn Gorman](http://www.abdn.ac.uk/talpa/Sand/Photos.html)*
02diagonal-sand
Smooth Ripples -------------- Responding to wind, sand can taken on an infinite variety of shapes. *Image: [Martyn Gorman](http://www.abdn.ac.uk/talpa/Sand/Photos.html)*
03ridges-and-hills
Mountains of Sand ----------------- Sand’s strange properties allow it to mimic large-scale geological formations, such as mountain ridges and canyons. *Image: [Martyn Gorman](http://www.abdn.ac.uk/talpa/Sand/Photos.html)*
04glossy-hills
Glossy Waves ------------ Worn smooth by wind, sand in large dunes can form into oscillating waves. *Image: [Martyn Gorman](http://www.abdn.ac.uk/talpa/Sand/Photos.html)*
05wet-wiggles
Wet Wiggles ----------- Sand has the peculiar ability to behave like a solid, liquid or gas. Here, patterns in the sand look like flowing liquid. *Image: [Martyn Gorman](http://www.abdn.ac.uk/talpa/Sand/Photos.html)*
06tree-pattern
Beach Fractals -------------- Branching patterns, mimicking tree-tops or roots, are one of many examples of fractals seen in nature. *Image: [Martyn Gorman](http://www.abdn.ac.uk/talpa/Sand/Photos.html)*
07point-reyes-sand-patterns
Roots in the Sand ----------------- Root-like channels in the sand seen at Point Reyes, California. *Image: [Cam Fortin](http://simpleart.co/point-reyes-sand-patterns/)*
08water-ripples-on-sand
Two-Tone Ripples ---------------- These light and dark ripples at the beach are caused by darker, heavier grains settling together, often at crests. Lighter, finer grains are easily whisked around and tend to settle at the bottom. Taken at Stone Harbor, New Jersey. *Image: [Daniel Wetmore](http://danielwetmore.wordpress.com/2009/08/09/water-ripples-on-dry-sand/)*
09sand-pattern
Pools Left by the Tide ---------------------- Taken at Stone Harbor, New Jersey. *Image: [Daniel Wetmore](http://danielwetmore.wordpress.com/2009/08/17/sand-pattern/)*
10sand-and-shells
Shells and Stones ----------------- One day these shells and rocks will be sand. *Image: [Martyn Gorman](http://www.abdn.ac.uk/talpa/Sand/Photos.html)*
11tiny-plateaus
Utah on the Beach ----------------- Tiny plateaus of sand, shaped by wind. *Image: [Martyn Gorman](http://www.abdn.ac.uk/talpa/Sand/Photos.html)*
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