PHYSICAL & CHEMICAL WEATHERING Flashcards
1
Q
- Freeze-thaw action of water trapped within fractures
- Causes expansion and contraction that disintegrates rocks
A
FROST WEDGING
2
Q
lateral freezing
A
frost wedging
3
Q
upward freezing
A
frost heaving
4
Q
- Near coastlines
- Salt accumulates and grows through cracks of rocks and fractures them while growing
A
SALT CRYSTAL GROWTH
5
Q
- Rocks originally covered are exposed and relieved from pressure
- Unloading action and expansion
- Onion skin layering
A
SHEETING/UNLOADING
6
Q
breakdown/fracturing
A
SHEETING
7
Q
eroding of overlying material
A
UNLOADING
8
Q
- Organisms/plants burrow roots into cracks
A
BIOLOGICAL ACTIONS
9
Q
- Intrusions beneath surface induce pressure from bellow and fractures rock mass on the surface
A
INTRUSIONS
10
Q
solution mixture of reactive components specific to rocks
A
SOLUTION
11
Q
addition of water
A
HYDROLYSIS
12
Q
exposure to oxygen
A
OXIDATION
13
Q
mineral that is most resistant to weathering
A
QUARTZ
