Flashcards
PW 7
Cards in this deck (10)
- 1What are the main types of gravitational re-working?-Debris flow deposits
-Fall deposits
-Slide and slump deposits
-Gelifunction deposits - 2What is the paraglacial debris cascade?
- 3What is debris flow deposits and what affects it?-The gravitational flow of sediment-water mixture
-Factors
-Bed gradient
-Bed roughness
-Changes friction
-Water availability
-Debris fabric - 4What are the main type of debris flow deposits?-Mobile flows
-Thin, highly fluid, rapid, erosive
-Crude size sorting
-Particles oriented in direction of flow
Semi-plastic
-Thick, slow moving, erosive
-Some size sorting
-Fold structures
-Weak particle orientation
-Less water, less mobile
-Creep
-Slow downslope movement,
-Undetected by naked eye
-Continuous sheet of creeping mass
-Little orientation and direction of flow - 5What is the process of debris flow deposits
- 6Where do mobile flows occur?-Commonly occur close to the glacier margin
-Water-logged sediments
-Ice cored moraines - 7Where do semi plastic flows occur?
- 8As you move from creep to semi-plastic to mobile flow what increases and decreases?-Increases
-Water content
-Flow rate
-Erosievness
-Fabric development
-Decreases
-Mean grain size
-Thickness
-Density
-Sheer strength - 9How do you represent multiple debris flow processes in a facies log?
- 10Describe the diagram below
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- Flashcards on PW 7, created by erossmae on 25/08/2015.
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- erossmae
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