1. In your Notebook…
Answer the following questions about the picture to the right:
How and where did this rock cool?
What minerals might it be made up of?
Make sure to explain how you knew the answers!

2. What do rocks tell us about the Earth?
Sedimentary Rocks
What do rocks tell us
about the Earth?

3. Sediments
Small pieces of rock that are moved and deposited by water, wind and gravity
When sediments come together they form sedimentary rocks

4. Sedimentary Rock Formation
Deposition
Sediments are deposited
Lithification
Physical and chemical processes that transform sediments into sedimentary rocks

5. Sedimentary Rock Formation
Compaction
Weight of the overlying sediments forces the sediments closer together
Cementation
Mineral growth “glues” sediment grains together into a solid rock

6. Sedimentary Rock Features
Bedding
Horizontal layering of sedimentary rocks

7. Evidence of Past Life
Fossils can be preserved in sedimentary rocks during the lithification process
(Organism  Minerals  Rocks)

8. Types of Sedimentary Rocks
Clastic Sedimentary Rocks
Form from the deposit of loose sediments that accumulate on Earths surface
Classified by the size of their particles
Coarse grained, medium grained and fine grained

9. Types of Sedimentary Rocks
Chemical Sedimentary Rocks
Minerals precipitate out of saturated solutions and settle to the bottom
Layers of chemical sedimentary rocks form, called evaporites

10. Types of Sedimentary Rocks
Biochemical Sedimentary Rocks
Form from the remains of once living things
Limestone comes from calcium carbonate which is used by some organisms (shells)

11. Classification of Clastic Sediments
How are clastic sediments classified?
What type of clastic sediment has largest particles size? Smallest?
What size are classified as sand?
What rock type is made up of cobbles?
Classify a sediment that is mm in size.
What type of rock has 0.05 mm sediment size?

12. Classification of Sed Rocks
Name 3 types of sed rocks.
How are clastic sed rocks classified?
Compare and contrast conglomerate w/ breccia.
How do chem. Sed. Rocks form?
Name 3 common evaporite minerals.
How do organic sed. Rocks form?
Name 2 organic sed rocks.