Applications of Vitrinite Anisotropy in the Tectonics: A Case Study of Huaibei Coalfield, Southern North China

Figure 7

RIS-logarithmic Flinn diagrams. The arrowhead directs the evolutionary path of RIS style; 𝐾-Flinn’S parameter [35], (𝜀₁−𝜀₂)/(𝜀₂−𝜀₃), where 𝜀₁ln(𝑅_max), 𝜀₂=ln(𝑅_int), 𝜀₃=ln(𝑅_min); 𝐾=∞-uniaxial prolate types; 𝐾=0-uniaxial oblate types; 𝐾=1-plane strain types;1<𝐾<∞-constriction types; 0<𝐾<1-flattening types.

(a)

(b)