IX) WEATHERING AND SLOPES (CH. 15, 17)
A) Weathering
1. Physical Weathering
a. Pressure release
b. Frost action
c. Expansion of
salt crystals and clay particles
d. Plant roots
2. Chemical Weathering
a. Oxidation and
reduction
b. Hydrolysis
c. Dissolution
d. Carbonation
3. Geographic variations in weathering
B) Karst
1. Dissolution of limestone (carbonation)
2. Conditions which favor karst
3. Karst stages and landforms
C) Mass Wasting
1. Slope balance: shear stress vs.
normal stress
2. Angle of repose
a. for loose soil
materials (cohesion)
b. for rocky slope
materials (interlocking friction)
3. Factors that determine slope stability
a. Slope angle
b. Weight of slope
materials
c. Moisture content
(solid, plastic, liquid)
d. Weathering
e. Earthquakes
f. Human activity
3. Mass wasting processes; examples
of slope failure
a. Failure of
solid materials: rockfall, landslide
b. Failure of
plastic materials: soil creep, solifluction, slump
c. Failure of
liquid materials: earthflow, debris flow
X) DRAINAGE BASINS AND FLUVIAL LANDFORMS (CH. 16)
A) Drainage Basin Hydrology
1. Water on Earth
2. Drainage basins
3. Hydrologic cycle equation (P
= ET + R +/- S)
4. Pathways of runoff
a. Surface runoff
(overland flow)
b. Groundwater
runoff (base flow)
B) River Channels
1. Sediment load
a. Suspended load
b. Bed load
c. Dissolved load
2. Channel morphology
a. Meandering
streams
b. Braided streams
C) Fluvial Landforms
1. Floodplain
2. Levee
3. Terrace
4. Canyon
5. Alluvial fan
6. Delta