Dip plots, static images, and captions

FIG. 17.  Structure formed by bedforms undergoing large and rapid fluctuations in height.  The left figure shows the bedform surface at a time when bedform height was a maximum; the right figure shows the same bedform at a later time when height was a minimum in the height-fluctuation cycle. 

RECOGNITION: This structure is similar to the preceding example, but the height fluctuations shown here are greater and have a more pronounced effect.

ORIGIN: This structure originates by the same process as the two preceding examples, but the greater height fluctuations in this example imply a greater fluctuation in flow conditions.