Carbon and Hydrogen Isotopic Reversals in Highly Mature Coal-Derived Gases: A Case Study of Paleozoic Gases in the Southern Ordos Basin, China
Figure 6
(a) δ13C-C2H6 versus wetness (modified from [15]); (b) δ13C-CH4 versus wetness (modified from [15]). (Data sources for shale gas in (a) and (b) are as follows: [13, 24–27, 29, 30]; from [14–16, 28, 31]).
