Geological application on the thermal history and thermal state in the sedimentary basin generally includes following tour topics. 1) Initial temperature/ depth, time/ temperature variations for oil and gas generation from petroleum window concept. 2) Time Temperature Index variations based on hydrocarbon generation rate due to temperature rise. 3) Kinetic approach with time and fractional yield. 4) Geological analysis on dike intrusion/ stretching based un temperature, time variation model of dll Ar/39Ar isotope.

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