Table 2 Vitrinite reflectance and illite “crystallinity”-indices measured at different laboratories
(a) Vitrinite reflectance | (b) Illite crystallinity | |||||
|---|---|---|---|---|---|---|
VRo Bochum | VRmax Aachen-Darmstadt | IC Hbrel Bochum | KI mm Basel | KI ∆° 2θ Frankfurt | KI ∆° 2θ Kübler standards | Zone transitions |
2.7 | 2.6 | 222 ± 20 | 5.8 | 0.43 ± 0.04 | 0.42 | Diagenesis/Anchizone |
4.1 | 3.9 | 175 ± 15 | 4.7 | 0.36 ± 0.02 | 0.33 | Low/High Anchizone |
5.5 | 5.3 | 125 ± 10 | 3.7 | 0.24 ± 0.01 | 0.25 | Anchizone/Epizone |