The geologicStructure v2.1 package contains a single class, ShearDisplacementStructure, which extends the v2.0 class of the same name by adding a "faultType" attribute. Comments to be completed. A simple vocabulary-controlled term to describe the type of fault structure. eg; thrust, high-angle reverse, normal, transcurrent, etc. More detailed descriptive information may be added using the movementSense and movementType attributes