GEOB 103 Lecture Notes - Lecture 7: Saprolite, Sustainable Organic Integrated Livelihoods, Digital Elevation Model

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Soil mantle: in humid regions, mild slope, relates to transport capacity. Stability --> force and balance (whether or not it exceeds the threshold) Diffusive processes: lowering/reducing of relief, the sediment is moving from high slope to low slope. Mass movements --> there are 3 big categories. Slides: can distinguish slope, a well-defined shear plane. Flows: much more messy, not a well-defined shear plane. Falls: think about a rock fall, very steep slope made of bedrock, with rocks falling down due to gravity. Topple: domino effect, horizontal falling of the slope. Evolution --> there are 3 main modes of evolution. Decline: when a slope over time is decreasing in slope. Parallel retreat: when the slope is decreasing, but still. Slope replacement: when the slope is entirely replaced. The importance of gathering data --> if we want to know how the landscape is changing, we need data. Gravitational movements: the key element that causes the movement is gravity.

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