1. Rock Cycle

2. Just a Review 3 Types of Rocks – Igneous – Sedimentary – Metamorphic

3. Igneous Rocks Formed by magma from the mantle cooling and becoming solid. Cooling may happen on the surface of earth. – Form at volcanoes, plate boundaries, etc… – Extrusive igneous rocks. Cooling may happen below the crust. – Intrusive igneous rocks.

4. Categories – Crystal Size Four types of igneous rocks – Course grained You can see the crystals without a microscope. – Fine grained You can only see the crystals with a microscope – Glassy No crystals present – Porphyritic Two sizes of crystals present

11. Coarse Grained Igneous Rocks Granite

12. Fine Grained Igneous Rock Basalt

13. Glassy Igneous Rock Obsidian

14. Porphyritic Igneous Rock Welded Tuff

15. What Type of Igneous Rock??? Coarse Grained

16. What Type of Igneous Rock??? Fine Grained

17. Sedimentary Rock Made of parts of other rocks that have broken into pieces. Sediment = small parts of other rocks Sediment made by weathering and erosion of igneous or metamorphic rocks. Sediment often seen as layers in rocks. – Layers = strata The formation of the sediment into one rock is called lithification.

18. Categories – Method of Formation Clastic Sedimentary Rocks – Made from sediments that were transported to a new location by wind, rain, or animals. – Sediment can range is in size from large to very fine. – Regardless of size sediments lithified into one rock.

19. Clastic Sedimentary Rock Breccia

20. Clastic Sedimentary Rock Sandstone

21. Categories – Method of Formation Chemical Sedimentary Rocks – Formed when water evaporates and leaves behind a solid – Like when the water in salt water evaporates and leave behind salt crystals – Lithification happens when the water evaporates.

22. Chemical Sedimentary Rock Rock Salt (Halite)

23. Chemical Sedimentary Rock Coal

24. Metamorphic Rocks Made from changing existing rocks into new rocks Not like sedimentary…the rocks are not broken into pieces and reformed. They stay in one piece Increasing the pressure or temperature or exposing them to a chemical will change the rock into a new type

25. 2 Categories - Texture Based on how the crystals align – Foliated (image b) – Non-foliated (image a)

26. 2 Categories - Texture Foliated Rocks – You can see distinct lines of different minerals. – They resemble pages in a book. Non-Foliated – Sometimes you can see bent lines of different minerals. – Sometimes it just looks like a mixture of minerals with no order at all.

27. Foliated Metamorphic Rock Gneiss

28. Foliated Metamorphic Rock Phyllite

29. Non-Foliated Metamorphic Rock Amphibolite

30. Non-Foliated Metamorphic Rock Marble

31. The Rock Cycle Magma

32. The Rock Cycle Magma Crystallizes (cools)

33. The Rock Cycle Magma Igneous Rock Crystallizes (cools)

34. The Rock Cycle Magma Igneous Rock Crystallizes (cools) Weathering and Erosion

35. The Rock Cycle Magma Sediment Igneous Rock Crystallizes (cools) Weathering and Erosion

36. The Rock Cycle Magma Sediment Igneous Rock Crystallizes (cools) Weathering and Erosion Lithification

37. The Rock Cycle Magma Sedimentary Rock Sediment Igneous Rock Crystallizes (cools) Weathering and Erosion Lithification

38. The Rock Cycle Magma Sedimentary Rock Sediment Igneous Rock Crystallizes (cools) Weathering and Erosion Lithification Metamorphosis

39. The Rock Cycle Magma Sedimentary Rock Sediment Metamorphic Rock Igneous Rock Crystallizes (cools) Weathering and Erosion Lithification Metamorphosis

40. The Rock Cycle Magma Sedimentary Rock Sediment Metamorphic Rock Igneous Rock Crystallizes (cools) Weathering and Erosion Lithification Metamorphosis Melts

41. The Rock Cycle Magma Sedimentary Rock Sediment Metamorphic Rock Igneous Rock Crystallizes (cools) Weathering and Erosion Lithification Metamorphosis Melts Metamorphosis

42. The Rock Cycle Magma Sedimentary Rock Sediment Metamorphic Rock Igneous Rock Crystallizes (cools) Weathering and Erosion Lithification Metamorphosis Melts

43. The Rock Cycle Magma Sedimentary Rock Sediment Metamorphic Rock Igneous Rock Crystallizes (cools) Weathering and Erosion Lithification Metamorphosis Melts

44. The Rock Cycle Magma Sedimentary Rock Sediment Metamorphic Rock Igneous Rock Crystallizes (cools) Weathering and Erosion Lithification Metamorphosis Melts Weathering and Erosion