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Sedimentary Rocks

Sedimentary Rocks. By Teodora and Eliot. How Sedimentary Rocks Are Formed?. In the beginning rocks were broken down to small pieces because of erosion and weathering which , were then piled on each other and after a long time they formed in to a sedimentary rock .

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Sedimentary Rocks

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  1. Sedimentary Rocks By Teodora and Eliot

  2. How Sedimentary Rocks Are Formed? • In the beginning rocks were broken down to small pieces because of erosion and weathering which, were then piled on each other and after a long time they formed in to a sedimentary rock. • Created when sediment composes

  3. Types of Sedimentary Rocks. • Flint • A sedimentary rocks • Used for weapons • Frequently contains fossils • Sandstone-sometimes known as Arenite • A sedimentary rock composed of sand sized minerals or rock grains- has many layers-some resistant from weathering. • Limestone-many layers –covers 10% of all sedimentary rocks • Composed by the mineral calcite and aragonite • Often has many fossils

  4. Properties of Sedimentary Rocks • Hard and rough • Has many layers • Made from sediments • May contain fossils • May be found in oceans, floodplains, rivers, lakes, swamps and lagoons • Theses rocks are laid down in layers called beds of strata

  5. Cited sources • http://www.glogster.com/media/5/20/29/62/20296284.jpg • http://en.wikipedia.org/wiki/Sedimentary_rock • http://en.wikipedia.org/wiki/Limestone • http://en.wikipedia.org/wiki/Sandstone

  6. The End Hope you enjoyed our presentation

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