Applications of Vitrinite Anisotropy in the Tectonics: A Case Study of Huaibei Coalfield, Southern North China
Figure 3
Coordinates and coal brick VR ellipses [47]. A coal sample brick was demonstrated in Figure 3(a), the measuring result were quantitatively represented in the coordinate system. The value and orientation of on each polished surface were shown on three mutually perpendicular cube face, represented by the long/minor axis of ellipse. For example, as shown in Figure 3(b), the measured value ( and ) and their orientations () are expressed as their coordinates and the RIS ellipsoid equation can be built.
