Figure F2. Samples used for this study. Solid arrows = green clay layer (GCL) samples, open arrows = background sediment samples. It is evident from this figure that not all the GCLs sampled are continuous.

Figure F2. Samples used for this study. Solid arrows = green clay layer (GCL) samples, open arrows = background sediment samples. It is evident from this figure that not all the GCLs sampled are continuous.