GEOLOGY

Detailed explanation-1: -Kerogen type III contains sufficient hydrogen to be gas generative but not enough hydrogen to be oil prone. In its pure form, it is composed of vitrinite, a maceral formed from land plant wood.

Detailed explanation-2: -Rock Eval pyrolysis S1 = the amount of free hydrocarbons (gas and oil) in the sample. S2 = the amount of hydrocarbons generated through thermal cracking of nonvolatile organic matter. S3 = the amount of CO2 (in milligrams CO2 per gram of rock) produced during pyrolysis of kerogen.

Detailed explanation-3: -A retort or pyrolyzer, in which the organic matters (kerogen) of oil shale and coal decomposes to produce oil (shale oil or tar), gas and char/coke, is the heart of the decomposition-based conversion process [11], [12].

Detailed explanation-4: -Pyrolysis is the decomposition of organic matter by heating in the absence of oxygen. Organic geochemists use pyrolysis to measure richness and maturity of potential source rocks.