Sand grains under the microscope
, you are walking on a solar or a moonlit beach, enjoying the heat and noise of the surf ... and hardly think about the tiny grains of sand under your feet. The sand seems a bunch of tiny brown pebbles, mixed with shells and cigarette butts. And how many centuries, thereby stepping stones? Fragments which blocks they were once .. Amazing mystery keeps the sand - a silent chronicle of biological and geological history of the local nature ...
The sand is made up of fragments of volcanic eruptions, blurry rocks, dead organisms and even destroyed objects created by man. Having considered the sand very close, as did the researcher and artist Gary Greenberg (Gary Greenberg), we'll see the unusual color, shape and texture of the granules.
Their "portraits sand" Greenberg created in different parts of the world. They are made with the help of 3D-microscope:
Lumahai Beach, Kauai, Hawaii (Lumahai Beach, Kauai Island, Hawaii)
Bright green olivine-rich iron - the basic component of Hawaiian basalt lava. mineral density allows to separate it from the other grains. Olivine "deliver" on the shore waves, and his accumulation of stained beach in the yellow-green color.
Northern Sahara, Marocco (Northern Sahara, Morocco)
pitted matt surface of these grains is typical of desert sands, where the pellets are constantly rubbing against each other. Many desert sands painted in a pale red color because of the thin layer of iron which drops with precipitation and covers grains.
Plum Island, Massachusetts (Plum Island, Massachusetts)
The metamorphic minerals formed at high temperatures and pressures underground, can become heavy, brightly colored grains of sand as the photograph. But the color - Assistant unreliable in determining the type of sand.
See, pink and red - a grenade. But it can also be brown, and black, and green and even orange, depending on the chemical composition. Bright green epidote in the center can be gray, brown or almost black. Angular black magnetite - the most common natural magnetic material on earth - almost always black, and it is often found near garnet.
Makena Point, Maui, Hawaii (Cape Makena, Maui, Hawaii)
This sand - red because of iron oxide, - of volcanic origin, it was the result of the solidification of liquid magma.
Maui, Hawaii (Maui Island, Hawaii)
Not all the sand - the remnants of mining particles. Biogenic sand, formed from the remains of marine fauna, - the main component of many tropical beaches. Local grain of sand - this tiny little fragments of marine shells damaged.
Relief curves on white sand grains - the marks of sea needles, etc. And blue grit relief erased..
Taketomi Island, Okinawa, Japan (Taketomi Island, Okinawa, Japan)
Thick white star, studded with small pearls, is a shell amoeboid protists known as foraminifera, or foraminifera.
Test shells consist predominantly of calcium carbonate, which animal is obtained from air and water carbon atoms.
Maui, Hawaii (Maui, Hawaii)
Similar to the glass needle in fact - components spongy spicules, they form the internal skeleton of sponges. It - quartz, which is found in the most unusual places. It comes in a variety of forms, from the "spiders" to "hooks". The particles are heavy and so sharp that can cut the meat.
In most cases, the destroyed beads surround the tip of the spiral shell consisting of calcium carbonate.
Geriba Beach, Brazil (Beach Geribá, Brazil)
The worms, which are found in large numbers in the ocean, and on the ground, dug tunnels in this piece of shell.
Delos Island, Greece (island of Delos, Greece)
What made the man well, sooner or later may become sand. This grain has been found on the Greek island of Delos - one of the most famous historical, mythological and archaeological places of Greece.
Delos was no local marble, and a huge amount of it to build the temples were brought to the island from other countries. Over time, the marble slabs collapsed, and the local beaches are now covered by the rubble of various types of marble.
New Mexico (NM)
Another type of sand: a small grain of copper is compressed in a big grain of (nugget). These granules were brought by the wind from an unknown natural copper "melting" of the furnace.