Slickenside: top rock shows areas of frictional movement along fault line. The striations are linear slickenlines showing the direction of movement.
In geology, a slickenside is a smoothly polished surface caused by frictional movement between rocks along a fault. This surface is typically striated with linear features, called slickenlines, which show the direction of movement along the fault plane. Here the lines can be seen along the top rock
Size: 3000px × 2354px
Location: Pensychnant Pass, Conwy, Wales
Photo credit: © Paula Hammond / Alamy / Afripics
License: Royalty Free
Model Released: No
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