I would like to know what are the typical Tmax values i can get when analyzing immature source rocks using Rock-Eval pyrolysis? This would help me in clearing some of my doubts.
Tmax between 430-435°C is for immature source rocks. I recommend you the Ken Peters´s article: Guidelines for Evaluating Petroleum Source Rock Using Proggrammed Pyrolisis. APPG Bulletin, v. 70, no. 3 (318-329 pages.
Please find the attached table that shows guidelines for describing stage of thermal maturity. I compiled and I'm going to published within one of my papers.