Kerogen | HI | OI | S2/S3 | Main Expelled Product at peak maturity | |
(mg HC/g TOC) | (mg HC/g TOC) | ||||
Type I | >600 | 15 | >15 | Oil | |
Type II | 300 - 600 | 40 | 1.2 - 1.5 | Oil | |
Type II/III | 200 - 300 | 40 - 115 | 1.0 - 1.2 | Mixed oil and gas | |
Type III | 50 - 200 | 115 | 0.7 - 1.0 | Gas | |
Type IV | <50 | 100 | <0.7 | Gas |