The following display is an SGR log. It shows both the gouge composition (SGR) and juxtapositions of sands and shales across the fault. Sands are shown in brown and shales are shown in black. A white SP trace shows the detailed stratigraphic juxtapositions.
The calculated gouge ratios are shown in color. High SGR's, or sand-prone portions of the gouge, are shown in hot colors. Low SGR's, or shale-prone portions of the gouge, are shown in cool colors.