Figure 3 | Scientific Reports

Figure 3

From: Widespread abiotic methane in chromitites

Figure 3

Correlations between concentrations of methane, other gases and ruthenium in the investigated rocks. (a) Methane vs hydrogen concentration; (b) methane vs ethane + propane + butane concentration; (c) methane concentration vs. stable C isotope composition (d) methane vs. ruthenium concentration. PGR: Peridotites, Gabbros and Rodingites; MSK2 (Othrys ophiolite) chromitite showed the highest amounts of methane, hydrogen, C2+ alkanes and ruthenium. AET samples (Vourinos ophiolite) showed the second highest CH4 and Ru concentration.

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