Plate P8. Pyrofusinite and pyrite replacement of woods. 3. T5829; Hole 1115A; 272.84 mbsf. Fusinite formed by charring of woody tissues, in this case xylem tissues, seen in longitudinal section. Cell wall structures are preserved, and some probable pit structures, probably scalariform pitting, are seen in some of the cell lumens. Reflectance of secondary cell walls = 3.96%. Primary cell walls seem to be similar to the secondary cell walls in terms of reflectances in this field (reflected light; field width = 0.22 mm; mean vitrinite reflectance = 0.22% and 0.25% in adjacent samples).