Are you ready to make some noise? It"s International Rock Day! Wait, not that sort of rock. Today, we"re all about granite, limestone and slate. There are three types of rock: igneous are formed from solidified magma and lava; sedimentary rocks are layers of sedimentary particles such as sand; and metamorphic rocks are the result of heat and pressure on other kinds of rock.
International Rock Day
Today in History
More Desktop Wallpapers:
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Madame Sherri Forest, New Hampshire, United States
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Mount Fuji Day
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Edinburgh cityscape and St Marys Cathedral steeples
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A day of swing and celebration
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Martimoaapa Mire Reserve, Finland
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Patriot Day
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Plum-headed parakeet
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Tour de France
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International Day of Friendship
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The oldest way to fly
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Swedish wilderness
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So good, they built it twice
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Sunset on the Valley of the Moon
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Muir Woods National Monument, California, United States
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A symbol of peace
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Saint Patricks Day
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Leap Day
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50 years of the Endangered Species Act
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Just a couple of know-it-owls
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Arenal Volcano, Costa Rica
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Dunluce Castle, County Antrim, Northern Ireland
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Handmade gnomes at a Christmas market
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Like paint on a canvas
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Moon Day
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Christmas Eve
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Hangin around
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Salzburg, Austria
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Bavarian Forest National Park, Germany
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A curious little otter pup
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Rothenburg ob der Tauber, Bavaria, Germany
Bing Wallpaper Gallery

