Zakeen and Faraghoun Formation as New Source Rocks of Palaeozoic Era in Persian Gulf and Coastal Fars South Iran

One of the most important and prevalent methods is been addressed Rock-Eval pyrolysis. In this study we have investigated and evaluated source rocks (Sarchahan, Zakeen, Faraghoun) with the method of non-identical temperature by the means of Rock-Eval 6 apparatus in the Persian Gulf and the Coastal Fars. In this study, Rock-Eval pyrolysis has been accomplished with heating rate of 25 °C/min, furthermore for reaching kinetic parameter, this analysis is done with 3 different heating rates of 5 15, 25 °C/min with Optkin software.

Analysis shows that kerogen types for different formations as below, Sarchahan: kerogen type II, II/III and HI of 93 mg/g, Zakeen: kerogen type III, II/III and HI 49 mg/g and Faraghoun: kerogen type III and HI 150 mg/g.

In Former studies of this area, the only known source rock is said to be as Sarchahan Formation. But with investigation of paleo logs, Rock-Eval analysis and kinetic parameters we can state that the presence of this shale layer (coal layer) in studied formation, we state that not only Sarchahan is a source rock, but also Zakeen and Faraghoun formations can play a good role as prolific source rocks.