List, briefly describe, and discuss the importance of sedimentary structures (i.e. how can they be used to deduce transport medium or environmental conditions).
Cross-bedding - beds deposited by wind or water layered down at an angle
Graded-bedding - deep-sea sediments deposited by turbidity currents with particle sizes becoming finer upwards
Ripples - small ridges of sand or silt formed by water or wind currents
Mud Cracks - evaporated water leaving behind solid mud