Figure F27. Close-up photograph of angular to round, light gray and dark gray domains irregularly distributed in a siliceous groundmass giving rise to apparent fragmental texture in Unit 51 (interval 193-1188F-30Z-1, 12-19 cm).

Figure F27. Close-up photograph of angular to round, light gray and dark gray domains irregularly distributed in a siliceous groundmass giving rise to apparent fragmental texture in Unit 51 (interval 193-1188F-30Z-1, 12-19 cm).