Figure 17. Large clast of light gray, metamorphosed, Mg-rich igneous rock with fine-grained structureless fabric surrounded by darker breccia matrix. Saw marks are visible on the surface of the clast (Upper Breccia Unit, Subunit IVA; Interval 149-899B-20R-1, 129-140 cm).

Figure 17. Large clast of light gray, metamorphosed, Mg-rich igneous rock with fine-grained structureless fabric surrounded by darker breccia matrix. Saw marks are visible on the surface of the clast (Upper Breccia Unit, Subunit IVA; Interval 149-899B-20R-1, 129-140 cm).