Assertion: structural geologist | /r/CapableOf | fold axial planes
Facets:
Source sentences:
text: Structural geologists measure a variety of planar features (bedding planes, foliation planes, fold axial planes, fault planes, and joints), and linear features (stretching lineations, in which minerals are ductilely extended; fold axes; and intersection lineations, the trace of a planar feature on another planar surface).