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→Interpreting tmax
==Interpreting t<sub>max</sub>==
==Interpreting t<sub>max</sub>==
We can use the general guidelines for maturation levels given below for Rock-Eval pyrolysis Tmax for types II and III kerogens. Different pyrolysis techniques have different cutoffs for pyrolysis oil and gas generation zone boundaries. Pyrolysis Tmax can be significantly different for type I kerogen<ref name=ch06r13>Tissot, B., P., Pelet, R., Ungerer, P., 1987, [http://archives.datapages.com/data/bulletns/1986-87/data/pg/0071/0012/1400/1445.htm Thermal history of sedimentary basins, maturation indices, and kinetics of oil and gas generation]: AAPG Bulletin, vol. 71, p. 1445–1466. Excellent review of the relationships between maturation indicators and hydrocarbon generation from kerogens.</ref> or kerogen containing high sulfur concentration and is not a reliable indicator of maturity for these kerogen types.
We can use the general guidelines for maturation levels given below for Rock-Eval pyrolysis T<sub>max</sub> for types II and III kerogens. Different pyrolysis techniques have different cutoffs for pyrolysis oil and gas generation zone boundaries. Pyrolysis T<sub>max</sub> can be significantly different for type I kerogen<ref name=ch06r13>Tissot, B., P., Pelet, R., Ungerer, P., 1987, [http://archives.datapages.com/data/bulletns/1986-87/data/pg/0071/0012/1400/1445.htm Thermal history of sedimentary basins, maturation indices, and kinetics of oil and gas generation]: AAPG Bulletin, vol. 71, p. 1445–1466. Excellent review of the relationships between maturation indicators and hydrocarbon generation from kerogens.</ref> or kerogen containing high sulfur concentration and is not a reliable indicator of maturity for these kerogen types.
{| class = "wikitable"
{| class = "wikitable"
|-
|-
! Hydrocarbon generation zone
! Hydrocarbon generation zone
! Rock-eval pyrolysis tmax, °c
! Rock-eval pyrolysis T<sub>max</sub>, °c
|-
|-
| Immature
| Immature