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Questions and Answers
What are the four general components into which slope profiles can be divided?
What are the four general components into which slope profiles can be divided?
Convex upper segment, cliff face or free face, straight segment with constant gradient, concave segment at the slope base
What is the waxing slope also commonly called?
What is the waxing slope also commonly called?
Convex slope
What is a free face in geomorphology?
What is a free face in geomorphology?
Outcrop of bare rock that stands more steeply than angle of talus heap at its base
What is the constant slope also commonly called?
What is the constant slope also commonly called?
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What accumulates towards the valley floor on a waning slope?
What accumulates towards the valley floor on a waning slope?
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Who proposed the 9 unit slope model in 1968?
Who proposed the 9 unit slope model in 1968?
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Study Notes
Slope Profiles
- Slope profiles can be divided into 4 general components: convex upper segment, cliff face or free face, straight segment, and concave segment at the slope base.
Components of Slope Profiles
- Convex upper segment (waxing slope): the upper surface that tends to become convex towards its edge with a free face.
- Cliff face or free face: an outcrop of bare rock that stands more steeply than the angle of talus heap at its base, derived from the weathering of the free face.
- Straight segment: having a constant gradient, also known as the angle of repose (rest) of talus derived from the free face, commonly called the talus or debris slope.
- Concave segment at the slope base (waning slope): talus broken down further, accumulates towards the valley floor, and concave upwards, also referred to as pediment, valley floor basement, or lower wash slope.
9 Unit Slope Model
- The 9 unit slope model was proposed by Dalrymple et al. in 1968, based on studies of dominant slope angles prevalent and the dominant processes identified on each of the nine components.
- Not all slopes would have all 9 units at any one time.
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Description
Explore the geomorphological processes and biophysical environments on slopes in Southern Africa as discussed by geomorphologists. Learn about the different components of slope profiles, including convex upper segments, cliff faces, straight segments, and concave segments.
