Figure 6.1

1
Figure 6.1
Weathering-CHAPTER 6
2
Figure 6.2
Increasing the surface area through mechanical
weathering Increase the area of rock exposed to
chemical weathering
3
Figure 6.3
Frost Wedging
Talus Slope
4
Figure 6.4
Unloading-Mechanical weathering
5
Figure 6.5
Half Dome-Yosemite Exfoliation Dome
6
Figure 6.8
Biological Activity Roots wedge rock
apart Animal burrows
7
Figure 6.10
Chemical Weathering
8
Dissolution-water molecules surround ions in
compounds
Figure 6.9B
9
Figure 6.11
Oxidation-Acid Mine drainage
10
Figure 6.12
Spheroidal Weathering Water moves
through joints making angular pieces rounded
Corners and edges have more surface area and are
attacked by chemical weathering
11
Figure 6.14
Rock composition important factor in chemical
weathering
12
Figure 6.15
Silicate minerals weather in the same order they
crystallize due to crystalline structure Olivine
weathers most easily (single SiO2
tetrahedra) weaker bonds Quartz most resistant to
weathering (framework tetrahedra) strong bonds
13
Figure 6.16
14
Figure 6.17
15
Figure 6.18
16
Figure 6.21
Idealized Soil Profile