Figure F31. S2 vs. total organic carbon (TOC) and hydrogen index (HI) vs. TOC. Boundaries for Types I, II, and III kerogen fields are taken from Langford and Blanc-Valleron (1990).

Figure F31. S₂ vs. total organic carbon (TOC) and hydrogen index (HI) vs. TOC. Boundaries for Types I, II, and III kerogen fields are taken from Langford and Blanc-Valleron (1990).