1. Sedimentary Rocks

2. Sedimentary Rocks Sedimentary rocks form in 1 of 3 ways:
1. Clastic Sedimentary Rocks- made of pieces and grains of other rocks. Material such as sand or mud
-usually deposited in water
Conglomerate sandstone

3. Sedimentary Rocks
2. Chemical Sedimentary Rocks- deposited in water from chemicals and minerals in the water. -limestone is deposited in water from calcite

4. Sedimentary Rocks
3. Organic sedimentary rocks- made up of remains of plants or animals.
Chalk is made from tiny shells
Coal is made from ancient plants

5. Other sedimentary Features
1. Fossils- can be very common in sedimentary rocks

6. 2. Nodules- (concretions) are ball-shaped rocks formed around a hard center object such as a sand grain 3. Geodes- hollowed out nodules with crystals filling the center area. Crystals are usually quartz

8. Sedimentary Rocks
Rock Name Formation Composition Other Features/Color 1. Sandstone clastic sand grains rust color(iron)

9. Sedimentary Rocks
Rock Name Formation Composition Other Features/Color 2. Shale clastic mud “mud stone”, layers

10. Sedimentary Rocks
Rock Name Formation Composition Other features/color 3. Conglomerate clastic rocks,cements natural cement

11. Sedimentary Rocks
Rock Name Formation Composition Other features/color 4. Coal organic ancient plants black, carbon

12. Sedimentary Rocks
Rock name formation composition other features/color 5. Limestone chemical calcite caves

13. Sedimentary Rocks
Rock name formation composition other features/color 6. Nodule clastic sand grains desert rose

14. Sedimentary Rocks
Rock name formation composition other features/color 7. Geode clastic quartz crystals hollow “earth stone”

15. Sedimentary rocks
Rock name formation composition other features/color 8. Agate clastic quartz “melted quartz”

16. Sedimentary Rocks
Rock Type formation composition other features/color 9. Jasper clastic quartz reddish brown “Jasper”

17. Sedimentary Rocks
Rock Type formation composition other features/color 10. Chert clastic quartz brown, arrowheads

18. Quiz: Sedimentary Rocks What you should know
You should be able to identify the 10 sedimentary rocks
You should know which are clastic, chemical, and organic
You should know how clastic, chemical, and organic rocks form
What is a nodule? A fossil? A desert rose? A geode?
What is the mineral usually inside geodes?
What are the 3 agates we learned?
What was my dog’s name? Why?
What mineral is limestone made of? What mineral are quartz, jasper, and chert made of?
What is sandstone made of? What is shale made of?
What rock is also called earthstone? Which is also called mudstone?
You MUST pass quiz to be able to the next 2 labs in class

19. On back of quiz paper
What are the 3 kinds of sedimentary rocks? 18. __________________ 19. __________________ 20. __________________