Figure F36. Close-up photograph of an array of subparallel oblique fractures lined with iron oxyhydroxides and calcite (Sample 200-1224F-14R-1 [Pieces 7-8, 62.5-76.5 cm]; Unit 3). Most of the rock is at least partially stained uniformly with iron oxyhydroxides, which also line the three larger fractures in lower Piece 8. Calcite later lined the same fractures, as well as the fractures in Piece 7.