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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Grand National
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Jorvik Viking Festival
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European river otter
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Kings Mountain, Chugach Mountains, Alaska, United States
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Armbrug bridge, Amsterdam, Netherlands
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A rock giant
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World Lake Day
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Frosty Finland
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Shenandoah National Park, Virginia, USA
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Bring the king cakes
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Lago Pehoé, Torres del Paine National Park, Chile
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International Lighthouse and Lightship Weekend
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Giving Tuesday
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Her legend and mystery endure
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Go with the flow
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Nothing says ‘San Francisco’ quite like...
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Blood moon
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Yungang Grottoes, Datong, China
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Mountains of sand
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Kirkjufell, Iceland
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British Summer Time ends
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Capitol Reef National Park, Utah, USA
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Starling murmuration over the ruins of Brightons West Pier, England
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Ride the wave
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Mothering Sunday
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Celebrating the tropics
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We can all just get along
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Blue as far as the eye can see
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International Ice and Snow Sculpture Festival, Harbin, China
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Es Vedrà and Es Vedranell, Ibiza, Spain
Bing Wallpaper Gallery

