Fig. 3
From: Thermochemical oxidation of methane induced by high-valence metal oxides in a sedimentary basin
Manganese and iron contents in authigenic calcites. a Histogram of MnO content in early-stage and late-stage calcite cements from T1b sandy conglomerates. b Crossplot of MnO and FeO content in early-stage and late-stage calcite cements from T1b sandy conglomerates. The error bar (±SEM) is smaller than the symbol size. Source data are provided as Supplementary Data 1
