Fig. 3: PAH ratio proxies for the Stensiöfjellet section.
From: Wildfire, ecosystem, and climate interactions in the Early Triassic
The color scheme of the markers in all figures is based on the depth profile indicated in Fig. 2. A Plot of RockEval versus the methylphenanthrene index (MPI-1) values, plot modified after28. The error is as large as the markers. B Petrogrenic vs. Pyrogenic and combustion source based on ref. 30. C TAR vs. LMW/ Total PAHs with linear regression curve of later Smithian and earlier Spathian points (Blue and green markers) showing a moderate correlation of r = 0.62 and statistical significance p = 0.03. We report r values to show the slope of the correlation. Only blue and green markers were used for regression analysis, as these capture the Smithian to Spathian transition. D Biplot of dimethylphenanthrenes (DMP) ratios following Karp et al.6. The y-axis error is smaller than the markers.
