1. Megan Robson, Katy Weaver, Steven Marriott Period 1
Rock Cycle
Megan Robson, Katy Weaver, Steven Marriott
Period 1

3. Sedimentary Rock ¾ of rocks in the lithosphere Three types
Clastic
Organic
Chemical
Heat and pressure exerted on these rocks forms metamorphic rocks

4. Clastic Sedimentary Rocks
Mud, sand , gravel and clay
Made of clasts, which are particles of other rocks
Sediments that clump into rocks

5. Organic Sedimentary Rocks
Forms in the sea as microscopic organisms
Formed by dead plankton
Limestone and chert are created
Dead plant material to peat to coal

6. Chemical Sedimentary Rocks
Isolated sea water that evaporates
Some minerals precipitate
Called evaporite sequence
Rocks are left over

7. Sediments Small pieces of other rocks
Comes from erosion and weathering of igneous, metamorphic, and sedimentary rocks
Come together to form sedimentary rocks

8. Igneous Rock Over 2/3 of the Earth’s surface
Made from Magma under the Earth’s crust
Basalt is the most common igneous rock
All rocks started as igneous rocks
In the lithosphere

9. Magma Under the Earth’s crust Cools to form igneous rocks
Melted igneous and metamorphic rocks

10. Metamorphic Rock Found in the lithosphere
Heat and pressure exerted on sedimentary and igneous rocks=metamorphic rocks

11. Bibliography