Striations

Looking down on a fault plane developed in Cretaceous limestones from the Chartreuse massif, French Alps. The fault surface is abraided by fine straie and decorated by newly precipitated calcite (white patches). These have opened on the "lee side" of steps on the fault surfaces. So we can infer that the eroded upper side of the fault has moved in the direction the pencil points.

Return to minor structures on faults page

Learning structure home page