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Sedimentary Rocks. From Sediment to Rock. Sediment Small solid pieces of material that come from rocks or living things May include shells bones leaves stems and remains of other living things. From Sediment to Rock. Most sedimentary rocks are formed through a series of processes :
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From Sediment to Rock. • Sediment Small solid pieces of material that come from rocks or living things May include shells bones leaves stems and remains of other living things
From Sediment to Rock. • Most sedimentary rocks are formed through a series of processes : • Erosion, deposition, Compaction, and Cementation
From Sediment to Rock. • Erosion Running water wind or ice loosen and carry away fragments of rock
From Sediment to Rock. • Deposition Process by which sediment settles out of the water or wind carrying it
From Sediment to Rock. • Compaction The process that presses sediment together in thick layers that build up gradually over time
From Sediment to Rock. • Cementation The process in which dissolved minerals crystallize and glue particles of sediment together
Types of sedimentary Rock • There are three main types of sedimentary rocks. Clastic Rocks, Organic Rocks, and Chemical Rocks
Types of sedimentary Rock • Clastic Rocks Sedimentary rock that forms when rock fragments are squeezed together Shale, Sandstone, Conglomerate, and breccia
Types of sedimentary Rock • Organic rocks These types of rocks form when the remains of plants and animals are deposited in thick layers. Coal (swamp plants) and Limestone (sea creatures)
Types of sedimentary Rock • Chemical Rocks When minerals that are dissolved in solution crystallize
Uses of Sedimentary Rocks • People have used sedimentary rocks throughout history for many different purposes, including building materials and tools. Example • flint for arrowheads • Limestone for cement and steel