1. Stream Drainage
Patterns

2. Start by reading the first page of the notes!

3. THE BEDROCK OF IN AN AREA WILL CAUSE STREAMS TO DRAIN IN A PATTERN

4. THAT CAN BE SEEN FROM OVER-HEAD (airplane). THESE ARE CALLED
DRAINAGE PATTERNS

5. Mississippi River Delta

6. C.

7. Match the geologic structures below To the drainage patterns they would create.

8. Rock resistance is all similar
THIS OCCURS WHEN:
Rock resistance is all similar

9. Horizontal rock layers
Like the veins in a leaf
Horizontal rock layers
Most common

10. WATER FLOWS DOWN HILL
FOLLOWING THE PATH OF
LEAST RESISTANCE

12. with rock layers of variable resistance
THIS OCCURS IN THE AREA
OF A STRUCTURAL DOME
with rock layers of variable resistance
surrounding the center of the dome C.
WATER FLOWS IN THE PATH OF
LEAST RESISTANCE

14. FOLLOWING THE PATH OF
LEAST RESISTANCE

16. STAGES IN LANDSCAPE DEVELOPMENT:
THE MATURITY OF A LANDSCAPE DEPENDS UPON THE PORTION OF THE LAND THAT HAS BEEN WORN DOWN TO OR NEAR
BASE LEVEL (NOT SEA LEVEL)

17. THE 3 STAGES OF LANDSCAPE MATURITY:

18. YOUNG 1.MUCH OF THE LAND AT HIGH ELEVATIONS 2. STEEP HILL SLOPES
3. FAST STREAMS
4. DEEP V-SHAPED VALLEYS

19. MATURE 1. ROUNDED HILL SLOPES (IF MOIST CLIMATE)
2. STREAM VALLEYS ARE BROAD
3. STREAMS BEGIN TO MEANDER

20. OLD 1. MOSTLY ERODED TO BASE LEVEL
2. STREAMS HAVE LOW SLOPE (GRADIENT)
3. STREAMS MOVE SLOW & MEANDER
4. FERTILE AND THICK SOIL HORIZON A

21. CAN CAUSE OLD LANDSCAPES TO BE REJUVINATED BACK TO YOUNG AGAIN
UPLIFT
CAN CAUSE OLD LANDSCAPES TO BE REJUVINATED BACK TO YOUNG AGAIN

24. ENVIRONMENTAL PLANNING AND CONSERVATION CAN HELP TO PRESERVE OUR
SOIL,WATER,AND AIR

25. shale Notice how the rock types weather differently
Differences in rock resistance creates varied
and interesting landscapes.
shale
Which rock is least resistant?

26. THE INFLUENCE OF CLIMATE ON LANDSCAPE:
Humid (moist)
Arrid (dry)
Slope
Soil
Type of
Weathering
gentle
steep
Fertile
Thick A layer
rocky
Chemical due to
Increased amount
Of moisture
Physical due to abrasion