Geology Chapter 3.2 0.0 / 5 ? Geologymodern sediments ASOCR Created by: abbbywCreated on: 28-12-17 16:10 Erosion the wearing away of the land surface + removal of sediment by means of transport 1 of 12 Abrasion the wearing away of the earths surface by the action of wind, water or ice dragging sediment over or hurling it at a surface 2 of 12 Attrition the wearing down of sedimentary grains due to collisions with other grains during transport 3 of 12 Mineralogical maturity a measure of the extent to which minerals have been destroyed by weathering + attrition 4 of 12 Solution the transport of ions dissolved in water, particularly K, Ca + Na 5 of 12 Traction the transport of material by rolling + sliding along a surface 6 of 12 Saltation the transport of material by bouncing 7 of 12 Suspension the transport of material in water or air, without it touching the earths surface 8 of 12 Roundness defines the relationship of the outline of a grain to a circle. A grain with few sharp corners has a high degree of roundness 9 of 12 Shape defines the relationship of a grain to a sphere, rod, disc or blade 10 of 12 Phi scale expresses grain size on a logarithmic scale. Phi values increase arithmetically as the grain size decreases geometrically 11 of 12 Textural maturity a measure of the extent to which a sediment is well sorted + well rounded 12 of 12
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