Figure 18. Breccia intervals in Unit IV. A. Clayey limestone containing a range of sizes of angular serpentine clasts that are similar to the serpentinite intervals within Unit IV (Interval 149-897D-10R-1, 31-40 cm). B. Brecciated limestone: both the clasts and matrix are nannofossil limestones; the lower part shows inverse grading and the upper part normal grading. The laminated fine sand beneath the breccia is a subarkose (Interval 149-897D-7R-1, 80-106 cm).

Figure 18. Breccia intervals in Unit IV. A. Clayey limestone containing a range of sizes of angular serpentine clasts that are similar to the serpentinite intervals within Unit IV (Interval 149-897D-10R-1, 31-40 cm). B. Brecciated limestone: both the clasts and matrix are nannofossil limestones; the lower part shows inverse grading and the upper part normal grading. The laminated fine sand beneath the breccia is a subarkose (Interval 149-897D-7R-1, 80-106 cm).