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Grains of sand are really very tiny particles of rock. It takes time and certain kinds of weather to turn rock into sand. Rain, frost, and wind can do the job. At beaches, the tide hitting against the rocks forms sand. Salt water, too, form...
http://www.bigsiteofamazingfacts.com/where-does-sand-co...
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In a most basic sense, the sand on our beaches comes from the erosion of the land. In our area the beaches rely on sand transported from the mountains by the rivers and from eroding cliffs near the shoreline.
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pages.sbcglobal.net/pjenkin/point/growing/sand.html
pages.sbcglobal.net/pjenkin/point/growing/sand.html
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Technically speaking, the term "sand" refers to a size of grain rather than a specific mineral composition. The grains we see on a beach are a product of weathering and erosion of rocks. The original rock can be any type - sedimen...
http://answers.yahoo.com/question/index?qid=20080611041...
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There are three basic rock types on the earth’s surface. Initially all rocks were “igneous”, i.e., they originated as magma in the earth’s interior. After erosion, which destroyed the original rock formations, sediments of the decay product...
http://www.ppoa.org/pr_tech_sand.htm
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There are three general classifications of beaches on St. John, sand, cobblestone and coral rubble.The most beautiful and most popular beaches are the soft white coral sand ... Where does the sand come from? ... Moreover, these storms often destroy large sections of reef, reducing the sand supply for years to come.
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www.stjohnbeachguide.com/sand.htm
www.stjohnbeachguide.com/sand.htm
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Fact Sheet #1: Where Does All the Sand Come From? ... The sand at White Sands National Monument is almost pure gypsum. Gypsum is different from many other rocks because it is readily soluble. That means it will dissolve in water, just like sugar or salt.
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www.nps.gov/whsa/geology.htm
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Black sand Sand is defined as grains that are between approximately 0.001m to 0.0001m. The grains themselves are typically derived from the nearby bedrock. Wave action breaking down the rock and crushing it untill it remembles sand.
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www.madsci.org/posts/archives/feb2000/951347335.Es.r.ht...
www.madsci.org/posts/archives/feb2000/951347335.Es.r.html
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You probably already know that sand dunes are sculpted by wind. As long as streams flow and lakes stay wet, the sediment in them is protected. When lakes or stream beds dry out the ... Where did the sand originally come from? What made it stop accumulating? The Kelso Dune sands remained a mystery until very recently.
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www.desertusa.com/geofacts/sanddune.html
www.desertusa.com/geofacts/sanddune.html
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