Plate P2. Wood tissues preserved as vitrinite, variable textures, and reflectance. 4. T5817; Hole 1109D; 688.21 mbsf. Woody tissue of varying original composition preserved as vitrinite. Marked variations are present within the telovitrinite, and these are largely due to differences in the original wood composition. Some of the higher reflecting telovitrinite has partial replacement of cell walls by pyrite (reflected light; field width = 0.22 mm; vitrinite reflectance [cell contents] = 0.48% [upper layer] and 0.26% [lower layer]).