1. What are the Factors that Affect Deposition?

2. Factors that Affect the Settling of Sediments
A. Particles factors
Size – the larger the settle in less time at a faster rate
Density – the denser particles settle in less time at a faster rate
Shape – the more spherical particles settle in less time at a faster rate

3. B. Effects of Water’s Velocity
As the velocity of the water decreases deposition increases.
*** Erosion occurs when the medium is gaining speed
Deposition occurs when it loses speed

4. Patterns of Deposition
Rivers and Moving water leave sorted deposited
Vertical sorting (graded bedding) – particles are layered with the largest and most dense on the bottom.
Vertical sorting
** occurs when a moving river comes to a sudden stop or a large drop in water velocity. ( River flows into a lake it will drop most of what it was carrying)

5. Horizontal Sorting – large particles dropped 1st and the smaller particles carried further out
As rivers enter larger bodies of water and there is a gradual decrease in velocity it will drop its heaviest sediments first carrying the smallest sediments the furthest distance
Horizontal sorting
Horizontal Sorting

6. Agents of Erosion and Deposition
Gravity – unsorted piles of angular sediments
Wind – well sorted deposits of small sediments

7. Running water – vertically and horizontally sorted sediments with rounded edges (abrasion)

8. Glaciers – unsorted and unlayered
Glacial Melt Water – acts like a river and sorts and layers the deposits