Slopes Flashcards
Hillslope is the area between…
watershed and the base. It is the inclined surface.
Two models of slopes:
- rectilinear
- convex-concave
The rectilinear slope is composed of…
cliff slope (steep gradient) and rectilinear slope(which is has a constant gradient).
Convex-concave slope has…
transfer zone, where rocks are transferred. It has a changing gradient.
At the cliff slope, it is most likely to find…
bare rock.
The concave slope is under…
the rectilinear slope or transfer zone. It is where weathered material accumulates.
Slopes vary with…
climate.
In humid areas slopes are frequently…
rounder, due to chemical weathering and soil creep.
The geological structure includes…
faults, angle of slope and vulcanicity. These factors influence the strength of the rock and create lines of potential weakness within.
Slopes composed of many different…
types of rock are often more vulnerable to landslides due to differential erosion.
Clay soil can hold…
much more water than sandy soil. A deep clay on a slope where vegetation has been removed is vulnerable to a mass movement.
Soil can be considered as part of…
regolith.
