Fig. 2: World map of sedimentary basins, petroleum fields and seeps, and related fault density.
From: Influence of tectonics on global scale distribution of geological methane emissions
a Map of sedimentary basins (convergent, light yellow; divergent, light violet), petroleum field areas (grey) and geo-CH4 seeps (red dots). b Multiple histograms of fault density values at global scale (blue line), in convergent (light yellow) and divergent (light violet) basins, in petroleum fields (grey), and at seep location (red). Grid cell is 0.2° × 0.2°. The fault density mean value for divergent basins, petroleum fields and convergent basins is indicated above the light violet, grey and yellow circles, respectively.
