Carbon and Hydrogen Isotopic Reversals in Highly Mature Coal-Derived Gases: A Case Study of Paleozoic Gases in the Southern Ordos Basin, China

<div>(a) <i>δ</i><sup>13</sup>C-C<sub>3</sub>H<sub>8</sub> versus gas wetness (modified from [<a href="/journals/geofluids/2019/8608596/#B15">15</a>]); (b) detailed plot of <i>δ</i><sup>13</sup>C-CH<sub>4</sub> versus gas wetness with a wetness range of 0%–4%.</div>

Geofluids

fig10

Figure 10

Figure 10: Carbon and Hydrogen Isotopic Reversals in Highly Mature Coal-Derived Gases: A Case Study of Paleozoic Gases in the Southern Ordos Basin, China 

Figure 10 | Carbon and Hydrogen Isotopic Reversals in Highly Mature Coal-Derived Gases: A Case Study of Paleozoic Gases in the Southern Ordos Basin, China 