Stream Drainage Patterns

26
Stream Drainage Patterns

description

Stream Drainage Patterns. Start by reading the first page of the notes!. THE BEDROCK OF IN AN AREA WILL CAUSE STREAMS TO DRAIN IN A PATTERN. THAT CAN BE SEEN FROM OVER-HEAD (airplane). THESE ARE CALLED. DRAINAGE PATTERNS. Mississippi River Delta. C. - PowerPoint PPT Presentation

Transcript of Stream Drainage Patterns

Page 1: Stream  Drainage Patterns

Stream DrainagePatterns

Page 2: Stream  Drainage Patterns

Start by reading the first page of

the notes!

Page 3: Stream  Drainage Patterns

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

PATTERN

Page 4: Stream  Drainage Patterns

THAT CAN BE SEEN FROMOVER-HEAD (airplane).THESE ARE CALLED

Page 5: Stream  Drainage Patterns

Mississippi River Delta

Page 6: Stream  Drainage Patterns

C.

Page 7: Stream  Drainage Patterns

Match the geologic structures below

To the drainage patterns they would create.

Page 8: Stream  Drainage Patterns

THIS OCCURS WHEN:

Rock resistance is all similar

Page 9: Stream  Drainage Patterns

• Like the veins in a leaf

• Horizontal rock layers

• Most common

Page 10: Stream  Drainage Patterns

WATER FLOWS DOWN HILLFOLLOWING THE PATH OF

LEAST RESISTANCE

Page 11: Stream  Drainage Patterns
Page 12: Stream  Drainage Patterns

C.

THIS OCCURS IN THE AREA OF A STRUCTURAL DOME

WATER FLOWS IN THE PATH OFLEAST RESISTANCE

with rock layers of variable resistance surrounding the center of the dome

Page 13: Stream  Drainage Patterns
Page 14: Stream  Drainage Patterns

FOLLOWING THE PATH OF LEAST RESISTANCE

Page 15: Stream  Drainage Patterns
Page 16: Stream  Drainage Patterns

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)

Page 17: Stream  Drainage Patterns

THE 3 STAGES OF LANDSCAPE MATURITY:

Page 18: Stream  Drainage Patterns

1.MUCH OF THE LAND AT HIGH ELEVATIONS2. STEEP HILL SLOPES3. FAST STREAMS4. DEEP V-SHAPED VALLEYS

Page 19: Stream  Drainage Patterns

1. ROUNDED HILL SLOPES (IF MOIST CLIMATE)

2. STREAM VALLEYS ARE BROAD3. STREAMS BEGIN TO MEANDER

Page 20: Stream  Drainage Patterns

1. MOSTLY ERODED TO BASE LEVEL2. STREAMS HAVE LOW SLOPE (GRADIENT)

3. STREAMS MOVE SLOW & MEANDER4. FERTILE AND THICK SOIL HORIZON A

Page 21: Stream  Drainage Patterns

CAN CAUSE OLD LANDSCAPES TO

BEREJUVINATED

BACK TOYOUNG AGAIN

UPLIFT

Page 22: Stream  Drainage Patterns
Page 23: Stream  Drainage Patterns
Page 24: Stream  Drainage Patterns

ENVIRONMENTAL PLANNING AND CONSERVATION CAN HELP TO PRESERVE OUR

SOIL,WATER,AND AIR

Page 25: Stream  Drainage Patterns

Notice how the rock types

weather differently

Which rock is least resistant?

shale

Differences in rock resistance creates varied

and interesting landscapes.

Page 26: Stream  Drainage Patterns

THE INFLUENCE OF CLIMATE ON LANDSCAPE:

Humid (moist) Arrid (dry)Slope

Soil

Type ofWeathering

gentleFertileThick A layerChemical due to

Increased amount Of moisture

steep

rockyPhysical due to

abrasion