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4.3 Sedimentary Rock
Chapter 4.3 Sedimentary Rock
Question | Answer |
---|---|
Sediment | Rock and mineral fragments that are eroded during weathering. |
Where is sedimentary rock formed? | At or near the earth's surface hear water or where water once was in the past. |
Strata | Single, horizontal visible layers of rock. |
How is Clastic Sedimentary Rock formed? | Rock or mineral fragments, called clasts, are cemented together by the minerals calcite or quartz. Pressure cements the layers. |
The types of sedimentary rock | Clastic, Chemical, and Organic. |
How is Chemical Sedimentary Rock formed? | Dissolved minerals in water crystallizes. These minerals bind together in the form of crystals and create rock such as Halite. |
How is Organic Sedimentary Rock Formed? | Made from materials that were once living. These fossils are cemented together by pressure and heat. |
Types of Clastic Rocks | Conglomerate, Sandstone, Siltstone, and Shale. |
Types of Chemical Rocks | Halite which is formed form sodium and chlorine ions dissolved in water and crystallize to form Halite, which we know as salt. |
Type of Organic Rocks | Fossiliferous limestone or coal. |
Stratification | Process in which sedimentary rock is arranged in layers. The strata is visible because of different kinds, size, and color of the sediment. It is a record of the earth's history. |