Figure 20. Fine siltstone in Unit IV showing parallel laminae affected by millimeter-scale faulting. Open fractures in the upper part of the interval probably were formed during drilling. A fragment of serpentine occurs at the top of the photograph (Interval 149-897D-7R-3, 6-26 cm).

Figure 20. Fine siltstone in Unit IV showing parallel laminae affected by millimeter-scale faulting. Open fractures in the upper part of the interval probably were formed during drilling. A fragment of serpentine occurs at the top of the photograph (Interval 149-897D-7R-3, 6-26 cm).