OCS 1005 Chapter : Chapter 5 (Exam 1) Sediments
15 Mar 2019
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Document Summary
Sediment accumulation: sediments do accumulate at different rates in different places, sometimes it"s because the crust is new or old, but some areas have a stronger current or other features that make accumulation occur at slower rates. Sediment classification: by particle size, by source. Important to classify this way because it tells us a great deal when we start looking at patterns. Sediment classification - particle size: different types of particles are given different names, classified by the diameter of the particle, know order of larger vs smaller, boulder, cobble, pebble, granule. Silt: clay, why is particle size important, gives sediments different characteristics, with decreasing size of particles, we have a decreasing settling velocity in still water. Sediments composed primarily of particles of one size. Found where energy fluctuations occur in a narrow range (narrow range of current speeds: poorly sorted sediments. Sediments composed of particles of a range of sizes.
