1. Ocean Sediments
Chapter 23 Section 3

2. The JOIDES Resolution drills kilometers under the ocean.

3. Scientists study the core samples under microscopes.

4. Inorganic sediments are rock particles that fall to the ocean floor.

5. Sources of Inorganic Sediments
Rivers Wind Glaciers Meteorites.
Sources of Inorganic Sediments

6. Biogenic sediments are the remains of living organisms.
Marine plants
Animals
Bacteria
Biogenic sediments are the remains of living organisms.

7. Silica (SiO2 = glass) from diatoms and radiolarians

8. Calcium carbonate from microscopic foraminfera.

9. Chemical Deposits Nodules – potato-shaped mineral deposits.
Located on abyssal plains.
Usually made of oxygen and Fe, Mn, Ni and Cu.
Chemical Deposits

10. Coarse gravel-type sediment is heavy and found close to shore.

11. Classifying Sediment: Mud
Inorganic
Very fine silt and clay-sized particles of rock
Classifying Sediment: Mud

12. Classifying Sediment: Ooze
40% of sea floor is covered with ooze.
Mostly made of biogenic materials.
Classifying Sediment: Ooze

13. Ocean Floor Sediments