Type IV kerogen
Inert organic matter having Rock-Eval pyrolysis hydrogen indices below 50 mg hydrocarbon/g TOC in thermally immature rocks; dominated by organic matter that was recycled or extensively oxidized during deposition. Sometimes the type IV pathway is not shown on Van Krevelen diagrams, but it lies below the type III pathway.
- Dembicki, H., 2009, Three common source rock evaluation errors made by geologists during prospect or play appraisals: AAPG Bulletin, vol. 93, issue 3, pp. 341-356.
- Peters, Kenneth E., David J. Curry, and Marek Kacewicz, 2012, An overview of basin and petroleum system modeling: Definitions and concepts, in Peters, Kenneth E., David J. Curry, and Marek Kacewicz, eds., Basin modeling: New horizons in research and applications: AAPG Hedberg Series no. 4, p. 1-16.