Discussion
Thermal maturation of sedimentary organic matter to hydrocarbons is driven by :
Answer: C
Thermal maturation is driven by both temperature and time.
Kerogen breaks down into oil and gas through chemical reactions whose rates rise steeply with temperature but which also need geological time to proceed. A source rock can reach the oil window either by being heated strongly for a short time or moderately for a long time, which is the basis of Lopatin's time-temperature index (TTI) and of modern basin models.
Temperature alone or time alone ignores this trade-off, and pressure has only a minor effect on the reactions compared with temperature.
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