Flashcards

PW 7

erossmae Inglês 10 flashcards

Flashcards do conjunto (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