Figure 37. Fragmented grains within an apparently ductile matrix at Interval 149-899B-21R-3, 67-70 cm, defining a "flow fabric" around a clast. A calcite vein can be seen to cross the structure at the upper right. Photomicrograph under plane-polarized light, the size of the largest clast in the middle part of the photo is on the order of 1 cm across.