1. ROCKS

2. IGNEOUS ROCKS
Rocks that are formed from solidification of molten rock materials.

3. Tough rocks with no plates visible.
8H Igneous rocks
Igneous rocks
Tough rocks with no plates visible.
The crystals (if you can see them) often interlock and run in different directions.
No fossils present – EVER!
Rocks do not form in flat beds.
Non-porous (will not let water through)

4. INTRUSIVE IGNEOUS ROCKS
Rocks that solidify below the Earth’s surface or underground, cooling slowly to produce coarse-grained rocks.

5. DIORITE

6. GABBRO

7. GRANITE

8. PEGMATITE

9. EXTRUSIVE IGNEOUS ROCKS
Rocks that solidify above the Earth’s surface, cooling quickly to produce fine-grained rocks.

10. ANDESITE

11. BASALT

12. OBSIDIAN

13. PUMICE

14. RHYOLITE

15. SCORIA

16. SEDIMENTARYROCKS
Rocks that are formed from accumulation of sediments.

17. Often look like flat plates stuck together.
8H Sedimentary
Sedimentary rocks
Often look like flat plates stuck together.
Grains often visible, these can crumble apart.
Fossils can be present.
Rocks come from flat beds.
Often porous (let water pass through easily).

18. CLASTIC SEDIMENTARY ROCKS
Rocks that are formed from mechanical weathering debris.

19. BRECCIA

20. CONGLOMERATE

21. SAND STONE

22. SHALE

23. CHEMICAL SEDIMENTARY ROCKS
Rocks that are formed when dissolved materials precipitate from solution.

24. HALITE / ROCK SALT

25. Rocks that are formed from accumulation of plant/animal debris.
ORGANIC
SEDIMENTARY ROCKS
Rocks that are formed from accumulation of plant/animal debris.

26. COAL

27. METAMORPHIC ROCKS
Rocks that are formed through modification by heat and/or pressure deep in the Earth’s surface.

28. Remains of fossils sometimes present – but not often.
8H Metamorphic rock
Metamorphic rocks
Often ‘sugary’ with particles that can be arranged in sheets or randomly.
Remains of fossils sometimes present – but not often.
Beds often have wavy bands.
Often less porous than sedimentary rocks – but metamorphic rocks show a wide range of porosity.

29. FOLIATED METAMORPHIC ROCKS
Rocks that have layered or banded appearance due to exposure to heat and direct pressure.

30. GNEISS

31. PHYLLITE

32. SCHIST

33. Rocks that does not have layered or banded appearance.
NON-FOLIATED
METAMORPHIC ROCKS
Rocks that does not have layered or banded appearance.

34. MARBLE

35. AMPHIBOLITE

36. HORNFELS

37. QUARTZITE

38. 8H The rock cycle