Laser Pyrolysis Gas Chromatography (LFGC) can provide important information on organic geochemistry, which can, in return, reflect rapidly and simply the tendency of thermal alteration of organic matter with increasing depth in oil-generating rocks and the percentage production of hydrocarbons as well as permit one to differemtiate the types and properties of kerogen in oil-bearing rocks. Experimental data can also show the variation of organic and effective carbon in oil-bearing rocks. - Aecordingly, new geochemical indexes for oil-generating rocks are expected.
