MOESM2 of Kinetic effect of heating rate on the thermal maturity of carbonaceous material as an indicator of frictional heat during earthquakes

Additional file 2. Peak decomposition method for Raman spectra. Description of data: Representative Raman spectrum (800 °C, fast-rate heating experiment) with peaks decomposed for calculation of the ID/IG ratio. Our ID/IG ratios roughly correspond to ID1/ID2 ratios calculated by several prior studies (e.g., Furuichi et al. 2015; Ito et al. 2017).