Research Article

FTIR and Raman Spectral Research on Metamorphism and Deformation of Coal

Figure 6

Relationship of 𝐴 D of TDC with their metamorphic and deformation stages: (a) relationship between 𝐴 D and metamorphic stages, (b) relationship between 𝐴 D and deformation stages.
590857.fig.006a
(a)
590857.fig.006b
(b)