11-19-08

11-19-08 - Geography 1111 11/19/08 Streams and Eluvial...

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Geography 1111 11/19/08 Streams and Eluvial Landforms 1. Sediment load 2. Stream capacity 3. Longitudinal profile of streams 4. Streams as denudational agents a. Erosion b. Deposition 5. Floodplains Sediment Load Sediment load: eroded materials delivered to stream o Source of sediment: surrounding hillsides Slope processes Types of Sediment Load in Streams 3 types: Dissolved load: stream carries it along… dissolved in stream load o i.e. limestone Suspended load: little tiny particles—sand, silt, and clay that are being carried along in suspension throughout that water. o i.e. green and red river—dissolving different rocks makes for different colors Bedload: base of creek that isn’t moving 99.9% of the time. Stream Capacity Stream capacity: total amount of sediment a stream can carry… amount of work a stream can perform Influenced by: o Gradient—elevation change with horizontal distance Steep vs. shallow Steeper gradient
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11-19-08 - Geography 1111 11/19/08 Streams and Eluvial...

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