cf50a5b8_GPlates_Data_Manual_Table_3__Properties_Table_Used_In
[Property] dipSide [Optionality] Optional [Description] Used to specify the dip direction of the plane. The complete orientation of the plane is the strike (stored in the centerLineOf geometry property), the dip angle (stored in the dipAngle property), and the dip direction (stored in this property). The dipSide is stored as "Left", "Right", "Undefined", or "Unknown". "Undefined" is appropriate when the dip angle is 90 degrees or completely vertical, meaning it does not dip to either the left or right. Note that in this context, "left" specifically refers to the left hand side from the perspective of an observer travelling through the geometry of the object. This means "left" is entirely dependent on the order in which the points that comprise the geometry of the plane were digitised. That is to say, if the plane was digitised with the first point being in the South, and the last point being to the North, then "left" is to the West. If on the other hand, the exact same plane were digitised with the first point being in the North, and the last point in the South, then "left" is to the East. [Used In] 
GeologicalPlane FoldPlane Unconformity UnknownContact Fault BasicRockUnit
GPlates Data Manual
Used In