Figure 8From: Metathesis in the generation of low-temperature gas in marine shalesThe composition of methane, ethane, propane, and n-butane over time and its relation to equilibrium, Mowry shale, 11 hours at 100°C. Q = [(C1)*(n-C4)/(C2)*(C3)], % vol in C1-C4. The log Q curve (the right y axis) is superimposed on the four % vol curves (left y axis).Back to article page