1. Deposition Hydrology NOTES page 11 ©Mark Place, 2007-2008

2. big objects settle fastest

3. Rate vs. Time
Time in seconds
Rate is “speed” : miles/hr
cm/sec

4. denser particles settle first

5. Rate of Settling Particle Shape Round - because of shape
Which object will settle fastest?
Round - because of shape
Rate of Settling
round
flat
Particle Shape

6. Rate of Deposition
Slope

7. Rate of Deposition
Stream Velocity

8. Rate of Deposition
Stream Discharge

9. Where is
deposition
greatest?
Inside of Curve -
Point Bar
Mouth of River -
Delta

10. Why?
lowest velocity

11. What
agent
of deposition?
glacier - unsorted

12. Deposition by Streams: Graded Bedding
slow
SORTING -
Size, Shape, Density
fast
slow
fast

13. What happens to particle size?
decreases
Stream slows down
Why?

14. delta
What is this?

15. Huang He (Yellow River) - China

17. large
decreases
small

18. What agent?
wind

19. What direction?

20. Glaciers pg 8-9 ESRT

21. Glaciers – 1) Alpine / Valley 2) Continental/ Ice Sheet

22. IV. Anatomy of a glacier
A. Zone of Accumulation
Blanket of snow survives summer melting
Nourished by snowfall

23. IV. Anatomy of a glacier
B. Zone of Ablation
Snow and ice melt & sublimate in summer
Recognized by bare ice in summer
Where the glacier flows into water:
Calving: ice chunks break off and float away  icebergs

26. Ice sheet Movement

28. Glacial Deposits
till
unsorted

29. Moraines

33. Crevasses

35. V. Glacial Erosion
B. Landforms
5. U-shaped Valley
As glaciers advance down river valleys they carve them into U-shaped valleys.
Contrast to V-shaped valley formed by lateral stream erosion.

36. Glacial Deposits
erratics

40. striations, grooves, and polishes
Glacial Deposits
striations, grooves, and polishes

41. Glacial Features

42. Drumlin

43. Drumlins

45. The Great Lakes

48. taughannock state falls.

51. No Water??

52. Retreat of Niagara