Figure 4
From: Predicting sedimentary bedrock subsurface weathering fronts and weathering rates
Depth profiles of U6+ and Fe2+ concentrations. The data show the redox boundary at about 4.0 m bgs for the hillslope locations (the shaded region is the reducing zone). The data support the weathering front locations identified by the τ plots and porewater SO42− concentration-depth profiles.
